iCreatin 8 Multi Port power over ethernet PoE injector Adapter for 8 devices, Add Power over Ethernet To Any Switch. Use with External Power Supply for Passive or 802.3af Devices.[Without external power supply] Attention: This link do not included external power supply! For external power supply, please check our other link. This Power over Ethernet module allows you to power up to 8 devices remotely over ethernet wiring up to 328 ft (100 meters) away; Add PoE ability to any Ethernet switch or router. Use this device to inject power into the CAT-5, CAT-6 or CAT-7 cable. Standard Ethernet uses 2 of the 4 pairs, passive POE uses unused pins 4/5 for plus power, and 7/8 for ground. 10/100M operation, Add PoE ability to any Ethernet switch or router. Use this device to inject power into the CAT-5, CAT-6 or CAT-7 cable. Power Supply not included - for 802.3af devices use a 48v supply, Mikrotik uses 24v, Ubiquiti needs 24v or 48v, OpenMesh needs 24v or 48v