Genuine 1RW52 KB522 X20M8 7VHY1 Dell Business Multimedia USB Wired 104-Key 14-Hot Keys 2 USB Hub Keyboard Compatible Part Numbers: 1RW52, KB522, X20M8, 7VHY1 Genuine Dell Multimedia Business USB Keyboard Interface: USB Wired, 14 Hot Keys, Color: Black and Silver Hot Keys Functions Include: Sleep, Internet Browsing, My computer, calculator, zoom, e-mail, volume, mute, play/pause Removable Palm Rest, 2 Port USB Hub, Spill Resistant, Compatible Part Numbers: 1RW52, KB522, X20M8, 7VHY1, 7KKPH