The ThinkPad and ThinkCentre high quality keyboard tradition continues with this general purpose USB keyboard. This Preferred Pro USB Keyboard is very similar to those that come standard with ThinkCentre desktop systems. It is also compatible with USB enabled ThinkPad notebook systems and docks. Main Features Manufacturer: Lenovo Group Limited Manufacturer Part Number: 73P5220 Manufacturer Website Address: http://www.lenovo.com/us/en/ Product Name: Preferred Pro USB Keyboard Product Type: Keyboard Keyswitch Technology: Rubber Dome Keyboard/Keypad Connectivity Technology: Wired Keyboard/Keypad Wireless Technology: Not Applicable Number of Keys: 104 Localization: English (US) Keyboard/Keypad Host Interface: USB Color: Black Dimensions: 1.30" Height x 17.80" Width x 7.30" Depth Weight: 2.80 lb Standard Warranty: 1 Year Limited