The MIT-44GD and MIT-44GS family is a DC/DC PoE (Power over Ethernet) Injector, provide up to 4 different voltage DC input and four different voltage PoE output, output power maximum 35W/port (MIT-44GD) or 1A/port (MIT-44GS), data rate can be operating at 10M/100M/1000M. The polarity of each PoE output can be reversed if you need to reverse the output polarity.