T34W: - 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 - 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