Polycom VVX 500 12-line Business Media Phone POE, Power Supply Not Included 3.5'' (9-cm) TFT Touchscreen Display (320 x 240) Supports USB Cam For Video Conferencing Up to 12 line appearances, Streaming media video playback, Supports RJ9 USB Headsets HD Voice up to 14KHz on all audio paths, Full Browser (Webkit) Hard Keys, Home, Mute, Volume 2 x Ethernet 10/100/1000, 2 x USB 2.0 host, Supports Expansion Modules POE (Power Over Ethernet) Power Supply Sold Separately