100/1000M RJ45 Ethernet Cat5e/6 surge protector with PoE support. It is easily installed inline on an RJ45 Cat5e/6 cable. The arrester has two RJ45 female connectors, so inline installation is very simple and straightforward. It protects all Ethernet devices such as switches, routers, laptops/computers, IP cameras, etc. from harmful surges caused by static electricity. In addition, due to the PoE function, it ALLOWS PoE-enabled devices to remain powered while being protected from harmful lightning strikes or voltage spikes. IMPORTANT Two things are crucial and should NOT be missed when using the Ethernet surge protector: correct placement: IN connector on the unprotected part of the cable and OUT connector on the protected side of the cable. Reverse installation will still allow network traffic and operation, but there will be no surge protection at all Proper grounding: note the yellow/green ground conductor. This conductor must be connected to the correct electrical ground in the building. Consult a qualified electrician for such grounding or search the internet for information. Without proper grounding, the surge protector will not be able to drain the excess current and will be ineffective Features of POE1000M Surge Protector Fast energy absorption in case of surge Low resistance and minimal capacitance - minimal impact on the data link Easy in-line installation: two RJ45 female connectors Color: As shown Material: Plastic Package Contents: 1 x POE Network IP LAN Surge Protector Device The above package contents only, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.