Dualcomm DCSW-1005PT is a Network Tap for use with a 10/100Base-T Ethernet link. Its small portable size and being USB powered make it an ideal network traffic sniffing device for monitoring and troubleshooting data traffic in a 10/100Base-T Ethernet network. DCSW-1005PT further supports PoE inline power pass-through between the two inline ports, which is a very useful feature for capturing traffic of packets on a PoE link segment as DCSW-1005PT does not block the PoE inline power. DCSW-1005PT can be conveniently powered from a USB port of a host device such as a laptop. It has a built-in inrush current limiting circuit to prevent the computer from possible damages or disturbances by transitional high current flow. DCSW-1005PT can also be used as a 4-port 10/100Base-T Ethernet Switch.