K656 Specifications Keys: 112 Switch type: membrane Switch rating: 10 million presses Key route: 3.6 ± 0.3 mm Operating force: 52 ± 7 g Backlight: mixed colors (Rainbow) Interface: USB 2.0 Cable length: 1.5 m Size: 483 x 212 x 35 mm OS support: Windows 7 or newer Feature Anti-ghosting: 19-key rollover support Mixed 3-color rainbow backlight 8 multimedia keys, wide edge palm rest