Core Features: Built-In Dual Band 2.4G/5G Wi-Fi (802.11A/B/ G/N/Ac) Usb 2.0 Port For Wired Usb Headsets/Bluetooth Headsets Yealink Hd Voice 2.4 320 X 240-Pixel Color Display With Backlight Dual-Port Gigabit Ethernet Poe Support Opus Codec Support Up To 4 Sip Accounts Local 5-Way Conferencing Support Ehs Wireless Headset Unified Firmware Support Ydmp/Ymcs Stand With 2 Adjustable Angles Wall Mountable Handset With Hall Switch.