RealPresence Trio 8800 VoIP SIP wireless conference telephone, 2 x Gigabit Ethernet, PoE+ required or optional AC power kit required, 5 inch color LCD, HD audio, built-in 20 foot range microphone, WiFi 802.11b / g / n, Bluetooth 4.0, NFC, 2 x USB. Add up to two expansion microphones. Optional AC power kit. Must add 1 year support or 3 year support. Note: Enabling WiFi disables data on the Ethernet port (the AC power pass through is still active) - you cannot use WiFi and Ethernet simultaneously to connect the RealPresence Trio 8800 to your network. When you connect the RealPresence Trio 8800 to your network over WiFi, only audio-only calls are available. The RealPresence Trio 8800 does not support WiFi captive portals or WiDi.