Western Digital  Elements Portable External Hard Drive 500GB, USB 2.0, Black WDBAAR5000ABK-NESN   Overview The WD Elements Portable External Hard Drive from Western Digital® is an easy, reliable way to add more storage to your PC. Simply plug it in to a USB port and start saving or backing up your photos, music, video and other files. This 500 GB drive comes with a USB 2.0 interface which does not require any power adapter as it is powered directly through the USB cable. Moreover, this preformatted external hard drive is designed for use with windows based computers. If you are looking for simple and reliable add-on hard drive storage, the WD Elements Portable External Hard Drive is the ideal choice for you. Manufacturer Part# : WDBAAR5000ABK-NESN Dell Part# : A3037329     What It Is & Why Do You Need It?   An external hard drive that connects to a USB port. Use it to save your photos, music, video, and files.   What It Holds   Up to 100,000 digital photos Up to 125,000 songs (MP3) Up to 12,000 songs (uncompressed CD quality) Up to 38 hours of Digital Video (DV) Up to 190 hours of DVD quality video Up to 60 hours of HD video   Specifications     Drive Type:  External     Capacity:  500 GB     Interface:  USB 2.0     Temperature, Operating (°C):  41 - 95     Temperature, Nonoperating (°C):  -4 to 149   Key Features   WD quality inside and out - Designed with the same commitment to quality that made WD external drives the number one selling drives in the world. Plug-and-play simplicity - Just connect the power and plug it into a USB port to instantly add more storage to your computer. Designed to save power - Turns on and off with your computer. Enters idle mode when not in use. Utilizes a WD drive with power-saving WD GreenPower Technology™ and an EnergyStar compliant power supply. Earth-friendly packaging - Packaged in a minimized eco-friendly, recyclable packaging made from recycled materials. Preformatted for PCs - Designed for use with Windows-based computers. Can be easily reformatted for use with Macs.   Compatibility   Available USB port Mac OS® X Tiger® or Leopard® Windows® 7 Windows® Vista® Windows® XP Note: Compatibility may vary depending on user's hardware configuration and operating system.   Tech Specs General Device Type Hard drive - external Width 3.1 in Depth 5 in Height 0.6 in Weight 7.1 oz Localization Canada, Latin America, United States Hard Drive Capacity 500 GB Interface Type Hi-Speed USB Performance Interface Transfer Rate 480 Mbps Expansion / Connectivity Interfaces 1 x Hi-Speed USB Miscellaneous Cables Included 1 x USB cable Compatible with Windows 7 Software and devices that carry the Compatible with Windows 7 logo have the Microsoft assurance these products have passed tests for compatibility and reliability with 32-bit and 64-bit Windows 7. Compliant Standards RoHS Power Power Source USB bus Software / System Requirements OS Required Microsoft Windows XP, Microsoft Windows 7, Apple MacOS X 10.4, Microsoft Windows Vista, Apple MacOS X 10.5   What's In The Box USB 2.0 portable hard drive USB cable Quick Install Guide   What You Should Know What Are BUS POWERED USB Devices? USB was designed to allow many peripherals to be connected using a standard interface port, and to improve the plug-and-play features of PCs by allowing these devices to be connected and disconnected without rebooting the computer! Another convenient feature includes providing power (also known as Bus Power) to low-consumption devices without the need for an external power supply. So Bus Powered means the device is powered by the USB Port, and not an external power adaptor. Bus Powered devices offer a lot of flexibility, particularly when used on laptops and other portable devices. However, you need to determine when “bus power” is best. When is Bus Power best? You have a desktop with ample USB ports, or You have a laptop and you need to take your Bus Powered devices with you, or You only use the device intermittently and want the simplicity of no external power adaptors, or You want to keep desktop clutter to a minimum, and want to eliminate power cables. The best example of a USB Bus Power devices are: USB Thumb Drives, or Passport style USB Hard Drives. Rules for best results with Bus Powered Devices: Use a good quality USB Cable two feet or less in length. Be sure to directly connect the device to your computer, instead of through a hub or other device - unless the USB Hub has its own power. Make sure your laptop battery is fully charged. Generally speaking, you do not want many Bus Power devices connected at once, especially on portable devices or laptops running on batteries. So consider unplugging unneeded devices if necessary. Some devices can be powered both by an external adaptor or by Bus Power. As a general rule, you should use the external adaptor to power the device, except when you need to use it and external power is not available. However, higher-consumption devices, such as external optical media burners, and large hard drives, may work best with external power.