The HGW-401S is a 5-port Gigabit Ethernet switch with 4-port 10/100/1000Base-T(X) and 1-port 100/1000Base-X SFP slot for optical fiber providing stable and reliable transmission for Industrial Ethernet connections. HGW-401S is hardened for extreme operating temperatures: -40 to +75 Celsius. Industrial Switches are housed in IP40 rated rugged metal housings designed to operate in difficult conditions, including mechanically and electrically extreme environments. All Industrial switches have strong surge protection (4kV~8kV) per port, depending on models and strict compliance with IEC and EN standards for industrial grade equipment. All Industrial Ethernet switches include a DIN rail mounting kit and wall mounting kit.