AULA LED Illuminated Ergonomic USB Multimedia Backlight Backlit Gaming Keyboard (Blue)(SI-859) Blue color LED backlight. Keyboard connector: USB Keyboard size : 458.5(L) 190(W) 30(H)mm Strengthen the spacebar/ born for game. Blue color LED backlight System Requirements: PC with USB port. Windows 8, Windows 7, Windows Vista, or Windows XP