The VoIP Lounge 48V Power Supply for Polycom IP Phones (Includes AC Power Cord) Official The VoIP Lounge brand - Look for The VoIP Lounge logo on the box Brand New - Individually Boxed Compatible with VVX 300, 301, 310, 311, 400, 401, 410, 411, 500, 501, 600, 601 Compatible with SoundPoint IP 560, and SoundPoint IP 670 Input: 100-240VAC, 50/60Hz Output: 48V - 0.375A