Suitable for Windows XP/WIN 7/WIN 8/WINDOWS 2003 System; The usb numeric pad easy to get started, just plug and play; With 18 full-size keys, the numeric keypad is easy and comfortable to use; It is great for those working on spreadsheets, accounting files or financial applications. 18 key usb keypad with ABS keycaps ensures 50 million times keystrokes. Specifications: Material:ABS Color:Black Size:Approx.14x8.5cm/5.51x3.35in Wire Length:Approx.126cm/49.6in Suitable for Windows XP/WIN 7/WIN 8/WINDOWS 2003 System; Note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package Includes: 1x USB Numeric Keypad