Nexhi &trade; Replacement Polycom Power Supply for IP 670 , VVX 500 , IP 560 , VVX 600 and VVX 1500 48 Volt - Nexhi Replacement Polycom Power Supply for IP 670 Nexhi Replacement Polycom Power Supply for IP VVX 500 Nexhi Replacement Polycom Power Supply for IP 560 Nexhi Replacement Polycom Power Supply for IP 600 Nexhi Replacement Polycom Power Supply for IP 1500