ExtraLink EX.2039, POE Injector 6 PORT Gigabit. Use 10 100 1000M Ethernet Flexible power(DC 18 57V) Built-in LED Indicator Use with any Ethernet switch 650ma automatic resettable fuse on each port Supports IEEE 802.3at or 802.3af devices Mode A operation-minus on pins1 2,plus on3 6(802.3af at) Mode B operation-minus on pins7 8,plus on4 5(Mikrotik,UBNT ) Ideal for IP cameras,VOIP phone,WiFi Access Points. Output: 18-57V 90W (Max) Data: 1 2 3 6 4 5 7 8 Power: 3 6 1 2- ,4 5 7 8-. Dimensions: 150mm 65mm 26mm. Power supply not included recomend MIK-GM-2440 (24V 2,5A) for 24V GM-4820(48V 2A) for 48V.