All products reach: FCC, CE& UL standard Multi-media ultra-slim keyboard Connector: USB/PS2 13 Multi-media hot keys (power, my computer, calculator, stop, play, +volume, -volume, mute, previous, next, internet, e-mail, search) Appearance: Luxurious& Elegant Usage: Comfortable, Durable, Deft & Mute position Keystroke lifetime: Over 10000000 times System requirement: Windows 98/2000/NT/ME/XP/VISTA Working temperature: -20?C-45?C Working humidity: 10%-90% Keystroke pulling power: over 1kg Key switch elasticity: 55+/-7g Every keyboard in any color is viable