CyberData networking devices for Retail are designed to expand a single network drop into two separate connections. Our pass-through PoE technology allows users to use a single 802.3at or 802.3af network switch and passes that power through to one or two of the downstream switch ports with our 2-port Gigabit switch. The 3-Port Gigabit Ethernet Switch enables users of a PC or POS system to split a single Gigabit Ethernet port into two Gigabit Ethernet ports. The power for the switch is supplied by the PC or POS's USB port. This can be helpful for adding a network device like a Pin Pad to a POS terminal that is connected to a single network drop. The advantage of the CyberData products is that they do not need an external power supply.