Feature●One Piece 48v Power Supply Compatible for Nortel Ayaya and Select Polycom VVX Phone Models for Office or Home●Replacement Power Supply Compatible with Avaya 1110, 1120e, 1140e, 1210, 1220, 1230 as well as Polycom models noted below.●Replacement Power Supply Compatible with Polycom Poly Edge E500 Series, VVX 101, 201, 300, 301, 310, 311, 400, 401, 410, 411, 500, 501, 511, 550, 600, 601, 611, 1500 as well as Polycom CCX 400, 500, 600, 700 and d SoundStation IP 6000.●Input: 100-240VAC, 50/60Hz Output: 48V - 0.52A●No Hassle Return. 30 Day 100% refund.Description Power Adapter Compatible for VOIP Nortel – Avaya IP Phones 1100 & 1200 Series; Compatible Models - 1110, 1120e, 1140e, 1210, 1220, 1230 and Polycom Poly Edge E500 Series, VVX 101, 201, 300, 301, 310, 311, 400, 401, 410, 411, 500, 501, 511, 550, 600, 601, 611, 1500 as well as Polycom CCX 400, 500, 600, 700 and SoundStation IP 6000.