Features: 1.4 keys: This gaming keyboard is designed with 4 keys, including Ctrl, C, V and Enter, suitable for a variety of programming settings and single handed operation. 2.Plug and Play: This mini keypad is plug and play, and repetitive settings are allowed. Settings can be saved in the keyboard, and you do not need to set them again when changing the device. 3.Programmable Design: This mini mechanical keypad is programmable, and all key functions of standard keyboard can be easily set. Thus the complicated combination of shortcut keys can be realized. 4.USB Wired Connection: This gaming keypad adopts USB wired connection. Suitable for office, music, media, industrial control, laboratory, production line testing. 5.Widely Compatible: This programmable keypad adopts red switch, suitable for Dos, for Win, for Linux, for OS X Laptop, for Android, etc. specification:Item Type: Programmable Keypad Material: ABS Number Of Keys: 4 Applicable Scope: Computer Switch: Red Switch PackageList:1 x ProgrammableKeypad 1 x USB Cable