The CyberData 2-Port PoE Gigabit Port Mirroring Switch enables users of a network attached device to split a single 802.3af or 802.3at PoE powered Gigabit Ethernet port into two Gigabit Ethernet ports for diagnostics purposes while still maintaining a PoE connection to the attached device. Engineers, Programmers, and Field Service Personnel can utilize the Port Mirror function to monitor network traffic to and from a device with network monitoring software such as Wireshark. The CyberData 2-Port PoE Gigabit switch is powered from a single 802.3at or 802.3af network switch and passes that power through to one or two of the downstream switch ports.