MP56 VoIP Teams telephone, Android 9, 2 x Gigabit Ethernet, PoE required, AC optional, 7 inch touch colour LCD, optimal HD audio with Yealink Noise Proof Technology, supports Microsoft / Yealink / U2 device management platforms, RJ9 headset jack, USB, Bluetooth 4.2, 802.11ac Wi-Fi, add up to 3 expansion modules (sidecar / attendant console) SKU #EXP50 (MP56 Teams firmware 122.15.0.27 or higher required), optional AC power supply, SKU #PS5V2000US. Special Order, No returns or cancellations.