Intellinet 4-Port Industrial Gigabit Ethernet Switch with 2 SFP Ports-IP40 Rated Metal Housing, DIN-Rail Mount, Terminal Block Poweredfor Computer Desktop Internet Networking-3 Yr Mfg Warranty-508247

4 Gigabit Ethernet ports with 2 small form-factor pluggable GBIC module slots (SFP) to expand your network in an instant in harsh low/high temperature environments (-40 167°F). Has fanless design ideal for silent operation. A great unmanaged Splitter LAN Hub Router for harsh areas.
IP40 slim-type metal housing to withstand harsh industrial conditions. Option for DIN-rail installation.
Has 2 redundant DC inputs (12 48 V) with I/O terminal block, Power failure alarm, Port surge protection up to 6 kV, Grounding point to protect equipment from external electrical surges.
Eight 10/100/1000 auto-sensing ports automatically detect optimal network speeds. Has Store and forward switching architecture, Supports any combination of 10 Mbps, 100 Mbps or 1 Gbps network devices, Supports 4k MAC address entries with Auto-Learning and Auto-Aging, Switch fabric of 12 Gbps, Supports jumbo frames up to 9.6 Kbytes.
3 year manufacturer warranty . Instructions included. Power supply not included. Fully NDAA-compliant