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Features Options Insights & Definitions
Brand
Brand

Brands help you identify specific solutions that you will or will not consider. Brand is also a good indication of whether the product is focused on business users or consumers.

The number of solutions that a vendor has within a specific product category can indicate their commitment to, and corresponding success in, that market.

Another indication of vendor quality can be articles written and videos produced about specific products (use the "Articles & Videos" link on this page). Generally, such reviews are only provided for market leaders.

Price
Price
Quantity is the leading reason for vendors to discount their pricing. Quantity discounts are available to the pricing shown on the left. Enter the quantity you need here.

Price can be an indication of quality and value. Any vendor that charges more for a product than the marketplace is willing to pay will not remain in business, or at least in that market, for very long.

The price actually paid for a product is usually driven by available budget, but specific feature requirements can sometimes command a higher price.

Minimum Rating
Rating

Ratings have become very important in product and service evaluation. They can help you avoid a bad choice or they can eliminate any potential doubts you may have and help you with your selection.

Currently about 61% of prospective buyers check for ratings and read online reviews (use the "Articles & Videos" link on this page) before making a purchase decision.

Many products have no ratings. Products without ratings generally mean either the product is relatively new or has not gained much traction in the marketplace. Although, that should not necessarily disqualify a solution from consideration.

Form Factor
Form Factor

A tablet's Form Factor refers to its hardware design and physical shape.

Clamshell - a clamshell tablet is one whose keyboard and screen function like that of a traditional laptop; hinged together but not allowing them to be swiveled or detached from each other.

Convertible - a convertible tablet can function as either a standalone touch screen device or as a notebook with a physical keyboard. Some look like traditional laptops but have screens that swivel so they face outward when the cover is closed, allowing for use as a tablet. Other screens have 360-degree hinges, and some detach completely from the base.

Slate - a slate tablet is the most popular form factor, popularized by the Apple iPad. Unlike a traditional laptop, a slate tablet does not have a keyboard or mouse, but just a touch sensitive screen. They are generally lighter and smaller than other tablets.

Operating System
Operating System

The Operating System (OS) is the software that manages the tablet's hardware and software resources and provides common services for the applications you use on the tablet. The user interface (the overall design of what you see on the screen, and the way that you interact with the tablet) is also determined by the operating system.

The vast majority of today's tablets run on one of three operating system platforms: Android, iOS, or Windows. Each of these operating systems has its own strengths and weaknesses, which should be taken into account when you are trying to decide which tablet will best meet your needs.

Android was developed (and is still being updated and enhanced) by Google. Because Google released the Android source code under an open-source license, any tech-savvy company or individual could create a modified version of Android to meet their own need. This has lead to the widespread adoption of the Android OS by many vendors for use on a large number of devices. As a result, you will have many more Android-based tablets to choose from than either of the other two platforms. The downside to the easy modification/customization of the Android OS is that it has resulted in dozens of variations of the basic Android code. Because of this (and its open-source nature), Android is the least secure of the three platforms. Also, unless you purchase a Google-branded tablet (such ac the Google Nexus 7), you will not get automatic updates to the newest version Android when Google releases them.

iOS is Apple's proprietary operating system designed specifically for Apple devices. In other words, if you want the iOS operating system you have to buy an iPad. Similarly, if you buy an Apple tablet, iOS is the only operating system that will run on it. The biggest drawbacks to running iOS is that it allows the least amount customization to the basic interface, and the fact that it only runs on Apple devices (which tend to pricier than many other tablet options). Of course, iPads are the most popular tablets in the world because Apple operating systems have an elegance to their look-and-feel that people tend to like. If you are planning to use your tablet for business, iOs has some definite advantages. From a corporate security point of view, iOS is the most secure of the three platforms and the least likely to get hacked. Also, because Apple has tight control over both the tablet's hardware and software, compatiblity issues are almost non-existent. One last thing to keep in mind when choosing an iOS-based device. Apple pushes out new updates to its operating system as they become available, so if you're not careful your device might automatically update to a new version even if you don't want it.

Windows operating system was originally designed by Microsoft for use on desktop computers. However, with the release of Windows 10, Microsoft has created a very good tablet operating system as well. And while it is probably not as secure as iOS, Microsoft has been providing business-targeted operating systems long enough to take security seriously. Like Apple with iOS, Microsoft regularly pushes out updates and patches to all devices running Windows 10. While you won't be able to choose from as many Windows-based tablets as you would Android tablets, there are still many Windows tablets available from a large variety of vendors across all prices ranges. Probably the biggest advantage of a Windows-based tablet is for the business user. Because Windows 10-based tablets are running a full-blown version of Microsoft's operating system, they can run the same full-featured versions of business software (such as the Microsoft Office Suite, Adobe Photoshop, etc.) that run on PCs and laptops.

Memory
Memory

Memory determines how much digital information you can store on your tablet. This includes things such as videos, music downloads, photos, spreadsheet or text files, and even the number of apps you can have installed to your tablet. Tablets on the low end of the price range typically come with 8GB or 16GB of memory, and up to as much as 128GB on the high end. Windows 10 tablets often have storage capacities more in line with typical laptops, so it isn't uncommon to find them with 256GB of storage or more.

Unless you don't plan use your tablet much, or plan to use it in a very limited capacity (such as web-surfing via browser only), you'll probably find that the 8GB to 16GB range is a bit too constraining for your needs. To be able to store even a limited musical library and a couple of movies, you'll want at least 32GB to 64GB of storage space (and probably twice that if you'll be downloading a lot of video content).

Battery Life
Battery Life

Battery Life refers to the length of time you will be able to use your tablet before you need to plug it in to an electrical outlet and recharge the battery.

As tablets have come to be used for more than just entertainment devices, battery life has become increasingly important. Now that tablets are being adopted for use in organizations and government agencies, users expect that a tablet will typically have at least 6.5 hours of battery life with heavy use. Because of these expectations, longest battery life has become as important a feature as processor speed, amount of RAM, and screen resolution.

Screen Size
Screen Size

The screen size of a tablet is given as the diagonal measurement of the tablet's screen. If a tablet specification says that it has 7 inch screen, it means that the diagonal measurement (from one corner of the screen to the opposite corner) is 7 inches. When you measure a tablet screen horizontally, it is referred to as the width. Measuring it vertically is referred to as the height.

When determining the diagonal screen size, make sure you are measuring only the screen itself and not the entire tablet's diagonal size.

The screen size of a tablet is normally published in inches. However, in countries that use the metric system (such as most European countries and India), tablet screen sizes are sometimes specified in centimeters. To convert centimeters into inches divide the centimeter value by 2.54.

Screen Resolution
Screen Resolution

For tablets (as well as computers and cell phones), resolution refers to the number of pixels contained on the display screen or monitor. The term 'pixels' means the individual points of color that make up the image on the screen. Screen resolution is expressed in terms of the number of pixels on the horizontal axis and the number on the vertical axis. For example, a resolution of 1600x900 means the screen has 1600 horizontal pixels and 900 vertical pixels. A higher pixel count means a higher resolution, which results in more information visible on the screen without scrolling.

Resolution also effects the sharpness (or clarity) of the image on the screen. However, the sharpness of the display depends on both the resolution and the screen size. For example, a resolution of 1600x900 will result in a sharper image on a 7 inch screen than it will on a 10 inch screen.

Also, if you plan on watching HD (high definition) movies or TV programming on your tablet, you need to know that true HD requires a minimum resolution of 1920x1080. Lower resolution screens will still allow you to view the movie or program, but the image quality will not be as good as it would be on an HD TV.

Display Technology
Display Technology

Display Technology refers to the varying types of screens used in a tablet. All currently available displays are a variant of either LCD (Liquid Crystal Displays) or LED (Light-emitting Diode) displays.

AFFS+ - Advanced Fringe Field Switching Technology Plus (AFFS+) is a type of LCD screen (see below) that provides lowered power consumption and improved transmission of color and images.

AMOLED - Active-matrix Organic Light-emitting Diode (AMOLED) is a thin-film-display technology which provide higher refresh rates faster response times, but are susceptible to screen burn-in.

IPS - In-plane Switching (IPS) is a higher-end type of LCD screen (see below) that is currently the most widely used display technology.

LCD - Liquid Crystal Displays (LCDs) are the dominant technology used for tablet screens. They are very energy efficient and do not suffer from screen burn-in.

LED/OLED - Light-emitting Diode (LED) is a display technology that is thinner and lighter than its LCD counterpart. LED is likely to be more expensive, but has superior contrast and black levels. Organic Light-emitting Diode (OLED) is a variant that uses organic compounds to produce brighter pictures and better refresh rates.

MVA - Multi-domain Vertical Alignment (MVA) is an LCD (see above) technology with wide viewing angles, good black depth, good color reproduction and depth, and fast response times.

PLS - Plane to Line Switching (PLS) is an "IPS-type" panel technology that provides increased brightness and better viewing angle.

Super AMOLED - Super AMOLED is a term for an AMOLED (see above) display with an integrated digitizer: the layer that detects touch is integrated into the screen, rather than overlaid on top of it.

TFT - Thin-Film Transistors (TFT) is an implementation of LCD technology. Transistors are embedded within the panel itself, reducing crosstalk between pixels and improving image stability.

TN - Twisted Nematic (TN) displays contain liquid crystals that twist and untwist at varying degrees to allow light to pass through. They are most often used in grey screens.

Processor Speed
Processor Speed

Speed of the processor can make a significant difference in the overall performance of a tablet. Their processors are very different from their PC counterparts. The primary reason for this is the limited amount of power they have to run on when they are not plugged into an outlet. The less power that the tablet uses, the longer the system should be able to run off the battery. Faster processor speeds require more power. More power means either a shorter battery life or more weight, in the form of additional battery capacity.

It is important to understand how you plan to use the tablet. Lower speed processors are sufficient for web browsing, email, and most apps. More speed is useful if video streaming is a priority. Higher speed processors are needed for business applications and gaming.

Weight
Weight

Weight refers to how much the tablet itself weighs. This does not include the weight of the packaging the tablet shipped in or the weight of any other items (such as an external keyboard or a tablet case) that you use with the tablet.

Color
Color

Color refers to the color of the tablet's exterior casing. Generally, color only applies to the back of the tablet. However, some tablets have a narrow bezel surrounding the screen on the front that is often the same color as the back. Black, silver, and white are by far the most common and widely-available colors.

Rear Camera Resolution
Rear Camera Resolution

Digital cameras (like the ones in a tablet) are rated based on their resolution, which is measured in megapixels. The term megapixels is simply a measure of how many millions of pixels the camera's image sensor captures to produce the digital image. The more megapixels a camera captures, the more information it gathers. When viewing the image on a tablet or smartphone, more megapixels equates to a sharper image on screen. When printing an image that was taken using a digital camera, more megapixels allows you produce physically larger printouts before starting to see a loss in image quality.

Generally speaking, the rear camera (the one on the back of the tablet) will have a higher megapixel rating than the front camera. In any case, when comparing the resolution between one tablet's camera and another, a higher the megapixel count will result in a better digital image.

Front Camera Resolution
Front Camera Resolution

Digital cameras (like the ones in a tablet) are rated based on their resolution, which is measured in megapixels. The term megapixels is simply a measure of how many millions of pixels the camera's image sensor captures to produce the digital image. The more megapixels a camera captures, the more information it gathers. When viewing the image on a tablet or smartphone, more megapixels equates to a sharper image on screen. When printing an image that was taken using a digital camera, more megapixels allows you produce physically larger printouts before starting to see a loss in image quality.

Generally speaking, the front camera (the one on the same side as the tablet's screen ) will have a lower megapixel rating than the rear camera. In any case, when comparing the resolution between one tablet's camera and another, a higher the megapixel count will result in a better digital image.

Video Recording
Video Recording

Video Recording refers to whether a tablet's camera is capable of recording video, as opposed to being able to capture still images only. Most tablets these days can record video. However, the video resolution and the video formats supported can vary from one tablet to another.

Video Compression Format
Video Compression Format

Uncompressed video files are large... really large. Video compression is used to reduce and remove redundant video data so that a digital video file can be sent over a network or stored on a tablet, smartphone, or computer. Using efficient compression techniques, a significant reduction in file size can be achieved with minimal to no adverse effect on the visual quality. However, video quality can be affected if the file size is then further reduced by raising the compression level for a given compression technique.

A video compression format is simply an encoded format for converting a specific type of data to displayable information for storage or transmission as digital video content. Some examples of common video coding formats include MPEG-2 Part 2, MPEG-4 Part 2, H.264 (MPEG-4 Part 10), and AV1. Many video coding formats are documented by a detailed technical specification document known as a video coding specification. Such specifications are written and approved by standardization organizations as technical standards, and are thus known as a video coding standard.

A specific software or hardware implementation capable of video compression/decompression to and from a specific video coding format is called a video codec. An example of a video codec is Xvid, which is software that encodes and decodes videos in the MPEG-4 Part 2 video format.

Video content encoded using a particular video coding format is normally bundled with an audio stream (encoded using an audio coding format) inside a multimedia container format such as AVI, MP4, or FLV. Therefore, the user normally doesn't have a H.264 file, but instead has a .mp4 video file (an MP4 container containing H.264-encoded video coupled with AAC-encoded audio. Multimedia container formats can contain any one of a number of different video coding formats. For example, the MP4 container format can contain video in either the MPEG-2 Part 2 or the H.264 video coding format.

Different compression technologies, both proprietary and industry standards, are available. Most digital video vendors today use standard compression techniques to ensure compatibility and interoperability. This is particularly important for video compression since video may be used for different purposes. The use of standards ensures that end users are able to pick and choose from different vendors, rather than be tied to a single supplier.

Audio System
Audio System

Audio System can be a somewhat misleading term when applied to tablets. Typically, an "audio system" refers to the hardware (soundcard, tuner, amplifier, speakers, headphones, etc.) used to produce an audio output (i.e., what you actually hear).

In terms of tablet specifications, audio system refers to the software used to manipulate the audio signal between it's source (which could be a downloaded song or movie, a video file, or audio from a streaming service) and the output device. Output devices include the tablet's built-in speakers, external or wireless speakers, headphones, or earbuds. The most common types of audio signal manipulation include: equalization, compression, amplification, noise reduction, and simulation effects.

More often than not, a tablet's audio system simply refers to the "brand name" of the audio software loaded on the tablet. Generally speaking, it is usually whatever software was provided by the audio chip manufacturer or has been licensed by the tablet maker. Unless you have a lot of experience listening to different audio enhancement software, you will probably not be able to discern much of a difference between one tablet audio system and another (particularly if you will be listening to the tablet's built-in speakers).

However, if you'll be pairing your tablet with a quality set of headphones (and are planning to watch a lot movies on your tablet), you may want to consider a tablet that has Dolby Audio or DTS Sound. Both of these audio systems can create virtual surround sound when played over a standard set of headphones.

Audio Formats Supported
Audio Formats Supported

Audio Format refers to the file format used for storing digital audio data on a computer or other digital device (such as a tablet, smartphone, or digital audio player). There are three major types of audio file formats: lossy compression, lossless compression, and uncompressed audio.

Lossy compression audio formats provide the greatest reductions in file size of the three types. They achieve this removing some of the audio information from an audio track (song) and by simplifying the data. This results in a reduction in audio quality, but a number of techniques are used to remove only the parts of the sound that have the least effect on perceived quality. Most lossy compression formats offer a range of compression (typically in terms of bit rate) that can be applied. The lower the bit rate used, the smaller the file size (but also, the more significant the quality loss). However, because lossy compression results in the smallest file sizes, they are by far the most popular and widely preferred. It is worth noting that most people don't hear a noticeable loss in quality due to lossy compression, particularly when listening to music from their tablet or smartphone. Lossy compression audio formats include MP3, OGG, AAC, and WMA (WMA comes in both a lossy and a lossless version).

Lossless compression formats store data in less space than uncompressed audio, but without losing any information as you do with lossy compression. Therefore, the original uncompressed data can be recreated from the compressed version. Although audiophiles tend to prefer lossless compression, the size of the audio files is still much larger lossy compression. The limited storage most smartphones or tablets provide makes even lossless compression formats unsuitable for music libraries on mobile devices. Lossless compression formats include FLAC, M4A, and WMA (WMA comes in both a lossy and a lossless version).

Uncompressed audio formats ensure that nothing is lost, removed, or altered from the original recording. Although this results in the highest possible audio quality, the resulting file size makes it all but useless as a format for maintaining your music library on a mobile device. Uncompressed formats include WAV, AIFF, and AU.

Wi-Fi Standards
Wi-Fi Standards

WiFi or Wireless LAN (WLAN) standards are compatibility standards developed by the Institute of Electrical and Electronics Engineers (IEEE). They are also referred to as 802.11 standards.

The current standards are:

802.11a

802.11a supports bandwidth up to 54 Mbps and signals in a regulated frequency spectrum around 5 GHz. Because there is less interference in the 5GHz spectrum, 802.11a is often used in "noisy" electrical environments, such as hospitals. This higher frequency compared to 802.11b shortens the range of 802.11a networks. The higher frequency also means 802.11a signals have more difficulty penetrating walls and other obstructions.

802.11a has a fast maximum speed and its regulated frequencies prevent signal interference from other devices. But 802.11a has a higher cost and a shorter range signal that is more easily obstructed

802.11b

802.11b supports bandwidth up to 11 Mbps, comparable to traditional Ethernet. 802.11b uses the unregulated radio signaling frequency (2.4 GHz) as vendors often prefer using this frequency to lower their production costs. Being unregulated, 802.11b gear can incur interference from microwave ovens, cordless phones, and other appliances using the same 2.4 GHz range. However, by installing 802.11b gear a reasonable distance from other appliances, interference can easily be avoided.

802.11b provides for the lowest cost, a good signal range, and it is not easily obstructed by walls, ceilings, etc. But it also has the slowest maximum speed of any of the 802.11 standards and home appliances may interfere with it.

802.11g

802.11g supports bandwidth up to 54 Mbps and it uses the 2.4 GHz frequency for greater range. 802.11g is also backwards compatible with 802.11b, meaning that 802.11g access points will work with 802.11b wireless network adapters and vice versa.

802.11g has a fast maximum speed with good signal range that is not easily obstructed.
But 802.11g costs more than 802.11b and appliances may interfere with it.

802.11n

802.11n, also called "Wireless N", supports up to 300 Mbps of network bandwidth. 802.11n also offers somewhat better range over earlier WiFi standards due to its increased signal intensity, and it is backward-compatible with 802.11b/g gear. It increases the amount of bandwidth supported by utilizing multiple wireless signals and antennas (called MIMO technology) instead of one.

802.11n has a faster maximum speed and best signal range. It is also more resistant to signal interference from outside sources. But it costs more than 802.11g and its use of multiple signals may interfere with nearby 802.11b/g based networks.

802.11ac

802.11ac is the newest generation of WiFi signaling in popular use. Its network bandwidth is rated up to 1300 Mbps on the 5 GHz band plus up to 450 Mbps on 2.4 GHz. 802.11ac utilizes dual band wireless technology, supporting simultaneous connections on both the 2.4 GHz and 5 GHz WiFi bands. 802.11ac offers backward compatibility to 802.11b/g/n.

802.11ac has a fastest maximum speed and best signal range. It costs more than 802.11n and its use of multiple signals and dual frequencies may interfere with nearby 802.11a/b/g/n based networks.

4G
4G

Mobile Networks are often described by the "generation" of technology deployed and the transmission technology used. The most widespread combination in North America is a 4G LTE network, which is faster than its predecessors. However other (older) technologies are widespread throughout the rest of the world.

New mobile generations have appeared about every ten years since the first change from 1981 analog (1G) to digital (2G) transmission in 1992. 3G was introduced in 2001, and then it was followed in 2012 by 4G.

4G, short for fourth generation, is the fourth (and most current) generation of mobile telecommunications technology, succeeding 3G. As opposed to earlier generations, a 4G system does not support traditional circuit-switched telephony service, but uses all-Internet Protocol (IP) based communication such as IP telephony.

Generally speaking, 4G is around five times faster than existing 3G services. Theoretically, 4G service can provide transfer rates of 100 Mbit/s for high mobility communication (i.e. cars) and 1 Gbit/s for low mobility communication (i.e. stationary users). However, you probably won't achieve these rates in real-world use.

Bluetooth Capable
Bluetooth Capable

Bluetooth is a wireless communication protocol for connecting devices through the air. Although it's slower than Wi-Fi, it is often simpler to set up and it's generally preferred for device-to-device transfers. Two Bluetooth-enabled devices could be used to send and receive files wirelessly via the Bluetooth connection. To make two Bluetooth devices work together, you have to "pair" them. Pairing devices simply means you make them discoverable so that their Bluetooth radios can see each other.

In addition to sharing files over a Bluetooth connection, Bluetooth can also be used to connect your tablet or smartphone to a peripheral device. For example, you could pair a Bluetooth keyboard with your tablet or pair a Bluetooth headset with your smartphone. These days just about every tablet and smartphone supports Bluetooth, so it's become the default way for connecting to speakers, headphones, keyboards, and other devices without using a wired connection.

Near Field Communication (NFC)
Near Field Communication (NFC)

Near field communication is a form of contactless communication between devices like tablets or smartphones. It allows a user to wave the tablet or smatphone over a NFC compatible device to send information without needing to touch the devices together. It establishes communication between the two electronic devices when they come within 4 cm (1.57 in) of each other.

NFC devices are used in contactless payment systems and for social networking (such as sharing contacts, photos, videos or files). NFC-enabled devices can also act as electronic identity documents and keycards.

GPS
GPS

The Global Positioning System (commonly referred to simply as GPS) is a global navigation satellite system that provides geolocation and time information to a GPS receiver anywhere on Earth where there is an unobstructed line of sight to four or more GPS satellites. GPS capable devices can use this system to provide real-time location information and services such as on-the-fly driving directions. Dedicated GPS devices (such as the navigation systems available in many newer vehicles) are able to tap directly into the GPS satellite network. However, the GPS capability available in tablets and cell phones requires some kind of additional data source (such as a Wi-Fi or cellular connection).

If you have a tablet that only connects to the internet via Wi-Fi, the GPS capability will be availalble only when you have a Wi-Fi connection. Obviously, this will not be very useful for real-time driving directions. Tablets with cellular connections, on the other hand, can be used as real-time navigation systems when combined with apps such as Apple's "Maps" or Google's "Google Maps". However, you need to be aware that GPS services are very data and processor intensive. As a result, extended use of a tablet as a navigation device can quickly chew into your cellular data allowance as well as draining the charge on your battery at a much faster rate.

Protection Features
Protection Features

Protection Features is a catch-all phrase for how well a tablet can withstand environmental issues like water, dust, and temperature as well as how it handles wear and tear. Note the difference between the words resistant and proof. Water resistant means a little rain won't hurt it. Water proof means it can be submerged.

Storage Type
Storage Type

Storage Type refers to the technology used to provide the storage capacity of a tablet. The four types of internal storage most commonly used in tablets are flash, hard-disk drives, hybrid (or fusion) drives, and solid-state drives. Each is described in more detail below.

Flash is a form of solid-state storage. It works by storing data using a charge on a capacitor to represent a bit. Unlike traditional hard-disk storage, there are no moving mechanical parts involved. Because flash storage has no moving parts, it uses less power than disk-based storage. This makes it an ideal type of storage for tablets, which are most often used un-plugged and running off their battery charge.

Hard-disk drives (HDD) are a data storage devices that store and retrieve digital information using one or more rigid, rapidly-rotating disks that are coated with magnetic material. Because of their mechanical nature, hard-disk drives tend to be larger, heavier, and require more power than solid-state storage devices. Also, because the magnetic disks are quite thin, they are more prone to damage if dropped. On the other hand, hard-disk drives are the least expensive storage type to manufacture. This means that tablets using HDD storage can provide more storage for less money than tablets using all solid-state storage.

Hybrid drives are a combination of solid-state storage and hard-disk storage. They store your most-often used data in the solid-state portion of the drive, and push the rest of the data onto the hard-disk portion. They are basically an attempt to combine the speed of solid-state with the lower cost of hard-disk technology. The term "Fusion" drive simply refers to an specific implementation of a hybrid drive that was developed by Apple.

Solid-state drives (SSD) use the same basic technology as flash devices. However, because of some small technical differences, solid-state drives in general tend to be of higher quality and more reliable than basic flash devices. For this reason, tablets at the high-end of the storage capacity range (more than 128GB), tend to be solid-state drives rather than basic flash.

Compatible Memory Cards
Compatible Memory Cards

A memory card (sometimes called a storage card or flash card) is a small storage device that is used to store digital information on portable or remote computing devices. The types of digital information they can store include text, pictures, audio, and video. Most current products use flash memory, although other memory technologies are being developed.

Memory cards are most commonly used in portable electronic devices such as tablets, digital cameras, smartphones, laptop PCs, and digital music players. Although the MicroSD format is by far the most widely used in today's tablets, one major criteria to keep in mind when purchasing a tablet is whether its memory card is compatible with other devices you already own.

Number of HDMI Ports
Number of HDMI Ports

HDMI (which stands for High-Definition Multimedia Interface) is an audio/video interface standard. HDMI is used to transfer uncompressed digital video data and compressed/uncompressed digital audio data from one HDMI-compliant device to another. The HDMI port on a tablet is typically used to connect the tablet to a computer monitor, television, or digital audio device.

Not all tablets provide HDMI output capability, and the tablets that do seldom have more than one port.

Keyboard Supplied
Keyboard Supplied

Keyboard Supplied refers to whether or not the tablet ships with a physical keyboard included. Most tablets do not, as their manufacturers assume you'll be using the tablet's touchscreen interface. However, physical keyboards are widely available to be purchased separately. Physical keyboards generally connect to the tablet through a USB port or via Bluetooth.

Energy Star Certified
Energy Star Certified

Energy Star is a voluntary standard for energy efficient consumer products that originated in the United States in 1992. Since then, Australia, Canada, Japan, New Zealand, Taiwan, and the European Union have adopted the program.

It was created to help businesses and individuals save money and protect our climate through superior energy efficiency. Although it began as a way to cut down on the energy drain from computers, it now covers more than 50 product categories. Devices that carry the Energy Star service mark generally use 20–30% less energy than required by U.S. federal standards.

For more information on the Green movement, be sure to visit our Go Green guide here.

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