Feature:1. 4 Keys: This gaming keyboard comes with 4 keys, including Ctrl, C, V, and Enter, suitable for a variety of programming settings and one-handed operation. 2. Plug and Play: This mini keyboard is plug and play type and repetitive settings are allowed. Settings can be saved to your keyboard and you don't need to re-set them when changing your device. 3. Programmable design: This mini mechanical keyboard is programmable and you can easily set all the key functions of a standard keyboard. This way, you can realize a complicated combination of hotkeys. 4. USB Wired Connection: This gaming keyboard supports USB wired connection. Suitable for office, music, media, industrial control, laboratory, production line testing. 5. Widely compatible: This programmable keyboard uses red switch, suitable for Dos system, Win system, Linux system, OS X laptop, Android system, etc. . Programmable Keyboard 4 Keys Operation Specification:Article Type: Programmable Keyboard Material: ABS Number of Keys: 4 Applicable Scope: Computer Switch: red switch . Programmable Keyboard 4 Keys Operation How to use:open a website and download the software for configuration. . Programmable Keyboard 4 Keys Operation Package List:1 x Programmable Keyboard 1 x USB Cable . Programmable Keyboard 4 Keys Operation