WORRY FREE SERVICE - Worry free purchg with 2-year warranty and US Local Tech Support. INDUSTRIAL DESIGN - PoE Switch designed with the IP40 metal industrial case, supports Wide working temperature -40 °F to +167 °F (–40 °C to +75 °C ); DIN Rail mounting; 6KV surge protection; Suitable for harsh environments such as factory, refinery and traffic light control box. UL LISTED POWER ADAPTER - Default UL-certified 120W power adapter, optional Mean Well 240W Din rail Power Supply (: B015C9ITSS), the total PoE Budget of PoE Switch can be increased to 240W. REDUNDANT POWER SUPPLY - Support 2 channel DC48-56V redundant power inputs. Supports 8-pin simultaneous power supply (1/2/4/5 positive, 3/6/7/8 negative) and POE Mode A/B output. POE WATCHDOG - Realtime monitoring POE load device's status and will automatically reboot POE port when the connected device is not active. 4 BT90W PORTS - The 1~4 ports complying with IEEE802.3af/at/bt POE++ standards, deliver up to 90W power per port, suitable for high-power POE devices, like POE monitor, POE lighting, PTZ camera, etc. The 5~8 ports support the IEEE802.3af/at POE+ standards, deliver up to 30W (PoE+) power per port. The total POE budget is 120W. 8 PORT FULL GIGABIT POE SWITCH - Providing 8*10/100/1000Base-T Ethernet PoE ports and 2*1000Base-X SFP Ports.