The CyberData 3-Port USB Gigabit Port Mirroring Switch enables users of a network-attached device to split a single Gigabit Ethernet port into two Gigabit Ethernet ports for diagnostics purposes. Engineers, Programmers and Field Service Personnel can utilize this Port Mirror function to monitor the network traffic to and from that device with network-monitoring software such as WireShark. Power for the switch can be supplied by the host PC's USB port or from a standard +5V USB phone/camera charger.