... power Injector / Splitter Passive POE (Power Over Ethernet) DC power injector Power Connection male 2.1 ... mm,5.5mm Features:Passive POE (Power Over Ethernet) adapter, uses unused pairs of 100baseT network ... Specifications:1),Passive DC power Injector / Splitter 2), Ethernet Connection Two (2) 10/100BaseT (RJ-45)3 ... 5" x .5"6), Power/Data mixer7), Ethernet switches expand to wireless AP5V,7.5V,9V,12V,24V, ...