Item Type: USB 2 Key Mini KeypadMaterial: ABSSize: Approx. 4.8x3.0x 3.0cm / 1.9x1.2x1.2inUSB Cable Length: Approx. 1.5m/4.9ftCompatible Interface: USB CMacro Space: 34 BitsRGB Light Effect: SupportSupport: Partial BIOS OperationSupport: Wake up From Computer SleepSuitable For:for Windows, for OS X, Linux, for Pi, Computer, Phone and Tablet(If A USB C Port Computer, Phone or Tablet Uses This Keyboard, A Separate OTG Cable Is Required.)Package List1 x 2 Key Mini Keypad1 x USB Cable1 x ManualManual measurement please allow some error.1Plug and Play: 2 button gaming keyboard with Type C USB interface and driver free. After set up on for Windows 7 and above (excluding all in one and server), it is plug and play on for Linux, for OS X, for Windows, for Pi, phone and tablet, etc. 2Memory Function: 2 key gaming keyboard has a memory function, so you don't need to set it up again next time. After setup, other computers can also be used. One computer can be plugged into multiple keyboards and all of them can be used normally. (OTG adapter cable is needed for phone and tablet, etc.) 3Custom Configuration: Mini keyboard supports a variety of functional modes, each button can be set to a different functional mode, do not affect each other. Four modes: keyboard, mouse, multimedia, multi key mode. You can replace the keycaps and crosshair base by yourself, suitable for cherry keyboard keycaps. 4RGB Keyboard Macro Keys: RGB LED backlighting can be individually adjusted in the configuration software for key action display mode and on or off. The macro keyboard can be set up for one key macro operation. Pressing a single key is equivalent to pressing multiple individual keys in succession. The total length of each keystroke macro is 34 digits. It is also possible to add intervals, such as one key passwords. 5Portable and Mini: Portable mini keyboard with ultra small size of 1.89x1.18x1.18 inches, effectively saving desktop space. The mini keyboard and 1.5m Type C USB cable can be plugged and unplugged at will, making it easy to carry in the office. You can connect the keyboard (plug and play) and keyboard to the same computer at the same time, they will not interfere with each other.