WiFi-Texas WS-PS-48v60w - 48 Volt 60 Watt 1.25 Amp Power Supply with UL and FCC Approvals, 2.1mm x 5.5mm DC Connector for POE Injectors 48 volt 60 watt power supply to be used with WiFi-Texas PoE injectors and switches Use either as primary power, or use to add backup failover power Compatible with our 4 port, 8 port, 12 port and 16 port injectors 110 volt to 240 volt AC input For Expert Technical support from Austin, TX call 512 479 0317