Ruijie RG-E-120(GE) Power Injector is designed to power remote management products such as wireless access points, SOHO switches, IP phones, webcams and so on. The Power Injector, compliants with IEEE 802.3af standard, are PSE adapters supporting such products with PoE (Power over Ethernet) power supply. All the RJ45 ports on the Power Injector support auto MDI/MDIX cable recognition and the power injectors sustain power transmission via cable for up to 100m, enabling flexible deployment of powered devices (PDs). The Ruijie RG-E-120(GE) Power Injector provides excellent short circuit protection and enables intelligent automated PD recognition. The Power Injector detects if the connected device is a PD to eliminate all the possible harms a PSE appliance would cause to a non-PoE device.