- Compatible devices Laptop, PC, Tablet - Connectivity technology USB - Keyboard description Ergonomic - Special feature Ergonomic - Colour black - [Stable Connection] USB 2.0 Wired technolog - Plug and , no device drivers, signal transmission stability, no delay number pad -[Ergonomic Design] ABS Material, Small, Slim design, Numeric Keypad is easy to take with you, 18 USB number pad are easy and silent to press, Ergonomic tilt and anti-slip pads on back provides comfort. - [Full-Size 18 Keypad] 18 full-size and concave 18 design, applicated in sock, notebook computer, banking, school, company etc. Numeric Keypad’s keycaps life of more than 10 million .