External Hard Drives are hard drives designed to be plugged or installed outside of the computer case. They simply sit beside the computer and plugged to the computer using a short length of interface cable. They are generally installed by using a USB (Universal Serial Bus) or a firewire interface cable.

Just for comparison, there are hard drives that are called Internal Hard Drives, because they need to be installed inside the computer case, necessitating the opening of the computer case in order for them to be installed.

External hard drives can either be a Desktop or a Portable drive. Portable types are designed to be smaller than the Desktop ones, and they are meant to be carried around from one place to another.

Hard drive disk space capacities, which is a measure of how much information a certain hard drive can store, is expressed in MB (Mega Byte), GB (Giga Byte), and TB (Tera Bytes). A Megabyte is equal to 1 milllion bytes, while a Gigabyte is equal to 1 billion bytes, and a Terabyte is 1 trillion bytes. Also, 1000MB is equal to 1GB and 1000GB is 1TB.

With its huge capacity and sleek design, the FreeAgent® Desk storage solution delivers a powerful yet simple way to help safeguard all your photos, music, videos, and documents.

• USB 2.0: up to 480 Mb/s
• Rotational Speed: 7200 RPM
• Simple software, energy efficient, and encryption
• Dynamic display, ultra stylish, brushed metal, and flexible

The world’s best-selling external hard drive now features a new, smart, visual backup solution that protects your data automatically.

• Automatic, continuous backup
• Visual drive control center
• Password protection and 256-bit encryption
• Illuminated capacity gauge
• USB 2.0 interface

Features:

• Simple plug n' play add-on storage
• Built-in cooling vents for quiet, reliable performance
• Automatically powers on or off with your computer
• Sits flat or stands upright with included cradle
• Friendly, free unlimited technical support

The Iomega Prestige 1TB External Hard Drive is an easy-to-use, affordable, and energy-efficient desktop storage solution.

• Easy-to-use: simple USB 2.0 interface; just plug and play
• Stylish and durable: stylish drive - available in a dark silver brushed finish; sturdy aluminum construction with included stand
• Secure: EMC retrospect HD (PC) license is included for easy file backup (software available via easy download)
• Energy efficient: powered by an Energy Star qualified adapter for a better environment

With a unique ridged exterior that enhances the enclosure's cooling performance, and a quadruple interface for full Mac and PC compatibility, the LaCie 301442U d2 Quadra External Hard Drive is an all-in-one drive that's built with the professional in mind.

• External hard disk offers 1 TB with triple connection interface
• Supports eSATA, FireWire 800/400, and USB 2.0 connections
• Stylish enclosure by Neil Poulton reduces heat for quiet, fanless operation
• Shortcut button on drive lets you launch any application
• Device measures 1.7 x 6.3 x 6.8 inches (WxHxD); backed by a 3-year warranty

Easily take your photos, music, videos, and documents everywhere with the Seagate FreeAgent Go portable storage solution.

• 1 TB, USB 2.0
• Pocket and carry your data with ease thanks to a sleek design.
• Quickly sync and back up at your desktop without having to search for cables
• Keep your most important files and folders private with software encryption technology.
• PC Compatibility: Windows Vista Home Basic, Home Premium, Ultimate, or Business Service Pack-1, Windows XP Home, Professional, Media Center Edition Service Pack-2, Windows 7

The world's most popular portable drive now features maximum capacity to store all your favorite videos, music, photos, and important files. Still sleek and compact, you can load it up and take it with you anywhere.

• 1TB Maximun capacity in the palm of you hand
• Automatic, continuous backup
• Password protection and military-grade 256-bit hardware-based encryption
• Ultra-portanble design
• Powered directly from the USB port

The LaCie Little Big Disk Quadra is a quadruple interface hard disk that comes with eSATA 3Gbits, 2x FireWire 800 (6-pin FireWire 400 adapter included) and USB 2.0 connections for complete compatibility with any PC or Mac computer.

• 1TB Storage Capacity with 5400rpm Rotational Spped
• eSATA 3Gbits, FireWire 800, FireeWire 400, USB 2.0
• Built-in RAID 0 for superior speed
• Sturdy, highly ergonomic and quiet design
• FireWire bus-powered

Hard Drives

2TB External Hard Drive (2 TB External Hard Drive)

3TB External Hard Drive (3 TB External Hard Drive)

4TB External Hard Drive (4 TB External Hard Drive)

5TB External Hard Drive (5 TB External Hard Drive)

6TB External Hard Drive (6 TB External Hard Drive)

• LaCie's Network Space 2 will assimilate your data, resistance is futile - It's not as compellingly styled as the Starck Mobile Hard Drive, nor as ostentatious as the Golden Disk; in fact the Network Space 2 is visually identical to the earlier Network Space, featuring improvements where it counts: on the inside. The Network Space 2 can act as either an external drive over USB or as a NAS, with UPnP, DLNA, and iTunes compliance for media streaming -- but that's old hat.
• New Western Digital Drives Sport E-Paper Labels - Western Digital has rolled out new external hard drives that will make it easier for users to know exactly what's on their drives, as well as how much storage space remains available. Known as My Book Elite (Windows) and My Book Studio (Mac), the new product families feature a customizable label based on e-paper technology which reads like ink on paper.
• 21.5- and 27-inch iMacs (Late 2009) - Featuring bigger and better screens and shiny new mice, the physical changes to the aluminum iMac in this update are the most dramatic since it was introduced over two years ago, but the speed improvements are marginal at best. The new iMacs are currently available in three standard configurations. The entry-level $1199 iMac and the $1499 iMac both feature 21.5-inch displays and 3.06GHz Core 2 Duo processors; these models replace the 20-inch iMac () released earlier this year.