Fully assembled aluminum enclosure unit comes with: Western Digital 320-GB 5400-RPM Notebook HDD (2.5 inch) USB 2.0 A to B Cable CD software driver Protective Carrying Bag Features USB (Universal Serial Bus) Rev. 1.1/2.0 compliant Plug & Play, Hot-Swappable High-speed transfer rate up to 480Mbps Dimension (L x W x H): 5 x 2.9 x 0.5 in. Ultra Light Aluminum Housing USB Bus-power supported Supports Windows 98SE, Windows ME, Windows 2000, Windows XP, Windows Vista, Windows 7 and Mac OS 8.6 or higher Warranty One year limited warranty Availability: Usually ships the same business day UB20-WD320-25Regular price: $149.00Sale price: $79.75 Secure On-Line Ordering Site Tel: (888) 860-4416 Fax: (732) 416-8788 sales@pctekonline.com Business hours are from 10:30am to 7:00pm EST Monday to Friday 3 Kellogg Court Suite 11 Edison NJ 08817 Copyright (C) 1997-2011, PCTekOnline.com All rights reserved. Thank you for shopping at PCTekOnline.com !