These simple, inexpensive Ethernet jack/plug combinations used for loopback testing and to convert a standard Ethernet cable to a crossover cable are a no-brainer. Every network person should have one ...

A connector used for diagnosing transmission problems. Also called a "wrap plug," it plugs into an Ethernet or serial port and crosses over the transmit line to the receive line so that outgoing ...

So, we have some testing labs and some equipment in those labs that can connect to a PC with a direct network connection - no router or switch, just a loopback cable to the device. Device is ...