Ethernet cables aren’t just for data anymore… Power-over-Ethernet (PoE) sends up to 48 volts of power through CAT5/6 patch cables. Test cables for PoE voltage with the Power Panel before you connect network devices. The tester reports any discovery voltage and can test a PoE injector for full power. In addition, the Power Panel gives you information about what type of devices are connected, speed of data connections, and Ethernet pair wiring. The inline version of the Power Panel can do all of the above, plus gather additional information that is only possible to discover when it is connected in-between 2 network devices. Instead of just seeing individual device speeds, it shows see what the 2 devices the negotiated data rate. If PoE is involved, the inline Power Panel passes through the power to the PoE device so it is on while being monitored. It also can display the power consumed by the PoE device (in watts).