The MIT-4X4GD-4 and MIT-4X4GS-4 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-4X4GD-4) or 2A/port (MIT-4X4GS-4), data rate can be 10M/100M/1000M. The polarity of each PoE output can be reversed if you need to reverse the output polarity. This manual will help you to install and setting the PoE injector.