4-port 10/100/1000Base-T RJ-45 with IEEE 802.3af / 802.3at PoE Injector. 2-port SFP slot interface, SFP supports 1000Base-X and 100Base-FX transceiver via DIP switch configured. Complies with IEEE 802.3af / IEEE 802.3at Power over Ethernet Plus End-Span PSE. Up to 4 IEEE 802.3af / 802.3at devices powered. Supports PoE Power up to 30.8 watts for each PoE port. Provides DC 52V power over RJ-45 Ethernet cable to PD with Ethernet port. Auto-detects EEE 802.3af/at equipment and protects devices from being damaged by incorrect installation. Remote power feeding up to 100m. IP30 aluminum metal case protection. Dual SFP Ports Auto Link Redundant Mode Support. DIN Rail and Wall Mount Design. 24~48V DC redundant power with polarity reverse protect function and removable terminal block for master and slave power. Supports 6000 VDC Ethernet ESD protection. -40 to 75º C operating temperature. WITH LAYER 2 FEATURES.