Adesso WKB-4450UB Keyboard - Wireless Connectivity - RF - 2.40 GHz - 104 Key(s) - CoPilot, Desktop, Internet, Multimedia, Home, Screenshot, Back, Forward, Refresh, Stop, Search, ... Hot Key(s) - Windows, Mac OS, Android, Linux - English (US) - Computer - TouchPad - PC, Mac - Membrane Keyswitch: