Rapoo E9080. Device interface: RF Wireless, Purpose: PC, Recommended usage: Office. Frequency band: 2.4 GHz, Wireless range: 10 m. Wireless receiver interface: USB. Keyboard dimensions (WxDxH): 367 x 110 x 18.2 mm. Mac operating systems supported: Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion