FASTCABLING PoE Passthrough Switch 4 Port, VLAN, QoS, Expand Network Port with Existed Cat5e/Cat6 Cable, Managed 60W PoE Powered Switch, IEEE802.3at/bt

Expanding network ports for multiple IP powered devices in an easy way. Working with Fastcabling 5720-74 PoE injector and 5543-45 PoE switch, the whole system will provide 65W remaining power. This switch is designed to supply PoE for IP devices deployed in the field where power source is difficult to acquire.
There is always power loss inline. While you expand the PoE ports at the edge, you may consider the total power budgets. Working the 5720-74 90W PoE injector, the PoE powered switch can offer 65W total power for edge devices. Pick the pure copper cable instead of the CCA type will reduce the power loss.
The PoE powered switch not only can re-use the existed Ethernet cable to expand the POE ports at the edge, but also repeat the POE for another 328ft. The total POE distance is over 650ft far from the back-end PSU. Where the power goes, the PoE reach. It is simply plug and play, no additional power supply unit is required.
Technically, the PoE system doesn't require grounding as it is the DC48-DC55V lower voltage power system. However, grounding the switch still can help to introduce the surge to the ground. The copper cable may absorb the surge in the environment and send to both ends by damaging your devices accidentally.
Networking Interfaces (4) 10/100/1000 Mbps PoE Ports (1) 1 Gbps RJ45 PoE Pass through Ports Management Interface Plug & play Switching Capacity 10Gbps Power Method External or Pass through PoE Power Supply 48V-55VDC PoE Budget 65W LEDs Per Port PWR, LNK/ACT, PoE Surge Protection Different mode ±4 kv, Common mode ±6 kv PoE Interfaces PoE+ IEEE 802.3af/at (Pins 1, 2+; 3, 6-) Operating Temperature 0°C ~ 40 °C