HQRP 48V Gigabit POE Injector IEEE 802.3AT for Polycom VVX400, VVX500 IP Phone + HQRP Coaster HQRP&reg; POE Power Supply Injector plus HQRP&reg; Coaster; Input: 100-240V AC; Otput: 48V DC, 1A; POE adapters use IEEE802.3AT standard; Cable Connectors: RJ-45; Safety Features: High Efficiency and Reliability; Automatic Overload cut-off; Automatic Thermal cut-off; Short circuit and Over Voltage protection; Low Interference & Noise; 200 days warranty!