Handle multiple calls with ease using 12-line keys supporting up to 48 lines, features, and contacts. Up to two optional Poly Edge E Expansion Modules. Rest assured that your devices stay cleaner for longer with integrated Microban antimicrobial product protection*. Enjoy quality audio with the Poly Edge E400 Series plus reduce distractions with Poly NoiseBlockAI and Acoustic Fence technologies. Get fast access to the features you need via a large 5" color display. Stay informed with the surround light status indicator with RGB mixing. Two high-speed GigE PoE Ethernet ports for the LAN connection to your IP phone. And a Poly headset: USB, RJ9, or Electronic Hook Switch. *Microban antimicrobial product protection available for the Poly Edge E Series phones protects the entire phone except for the handset cord. Microban antimicrobial product protection is a built-in active ingredient that enables products to resist the growth of microbes such as bacteria, mold, and mildew. Microban prote