4-port 10/100Base-TX RJ-45 with auto MDI/MDI-X function; 2-port 100Base-FX SFP interface. IP30 metal case protection. DIN rail and wall mount design. 12 to 48V DC, redundant power with polarity reverse protection and connective removable terminal block for master and slave power. Supports EFT protection 6KV DC for power line. Supports 6KV DC Ethernet ESD protection. -40 to 75º C wide operating temperature. WITH LAYER 2 FEATURES.