i-rocks KR-6401-BK Black 103 Normal Keys USB Wired Slim Chocolate Key Style Keyboard Palm Rest: N/A Normal Keys: 103 Operating System Supported: Microsoft Windows 2000, ME, XP, Vista OS / 7 / 8 System Requirement: Available USB 1.1 or 2.0 ports for keyboard requires. IBM AT, PC and its compatibles. USB Port Parts: 1 year limited Labor: 1 year limited