standard keyboard 1.usb, ps/2, u+p 2.with/without 8 hot keys, waterproof ... with 9 leakage holes.4. wired,wireless,multimedia or wired usb hub keyboard at your option.5. Support Windows 2000, ME ... .5VOperating Current5mAPacking: 1pc/box-20pcs/ctn-0.0671cbm/ctn attractive usb ps/2 standard keyboard JZ-901