Dual power supply, automatic fault switching, anti-reverse connection does not damage the equipment, higher reliability, equipped with one UL-certified power adapter, can be used without additional purchase. IP40 protection grade, working temperature -40~75°C(-40~185°F), super robustness, anti-lightning, anti-static and anti-overload protection, adapt to various harsh environments. The shell is made of industrial-grade aluminum alloy, which is more sturdy, surface groove design, better heat dissipation, integrated DIN-rail mount kit, installation and disassembly are very simple. Support auto-negotiation, plug and play, no configuration needed, low-power consumption CPU, no fan quiet operation, green energy saving, suitable for various networks, such as home office, computer room, warehouse, factory, compact control box and other industrial scenarios with Ethernet access. This network switch include 8 gigabit ethernet ports, 2 gigabit SFP slot, with 1 1310nm 20km LC single module, supports long-distance transmission via optical fiber, switching capacity up to 20bps.