Add a crossover to any Ethernet cable with this adapter.
Works great at testing out uplinks lines before making permanent changes to a line. Bought a couple to keep in the toolbox. Also works great for when you need to put out a temporary switch and plug into the uplink.
I am very pleased with my experience with MCM. The website was easy to use, and has some very competitive prices. My order was shipped very quickly and I received my order less than a week after I placed it.