StarTech.com 2m Black DB9 RS232 Serial Null Modem Cable F/F - DB9 Female to Female - 9 pin RS232 Null Modem Cable - 2 meter, Black (SCNM9FF2MBK)

It's a cable, it fits, it works, it is flexible, and seems to be of decent quality.

I cut this cable in half to make a different cable. The conductors are 26-28AWG tinned copper with foil shielding. No complaints.

Great price from the OEM and backed by a know quality company!

Using it with a pair of TRENDnet USB to Serial Converter, Connect a RS-232 Serial Device to a USB Port, Easy Installation, Universal Plug & Play, TU-S9 adapters and added tester, GGLABS Mini RS-232 DB9 monitor and breakout adapter . A nice set up for testing PPP connections between Linux systems. Just don't ask why I need PPP connections ;) Also handy for connecting to DB-9 serial consoles. I like using the cable, tester, and a USB serial adapter for this because I can see what signals are active. I pushed it past 115.2k -- can't remember the speed, but it was about 4 times faster. Zero errors using Kermit to move a 2M file.

What I liked about it - is - that it worked. Not much "not" to like. If you find yourself in a situation where you need one of these critters, your life has a taken a turn for the worse. RS232 has gone the way of the DoDo bird... Unless, you work on archaic electronic equipment that belongs in a museum. Ergo, My need for a RS232 Null Cable. Laptops and/or tablets and/or smartphones no longer support a RS232 (aka Serial Port) You'll need a USB to RS232 adaptor for a start + drivers + a way to see if the simulated port is working. National Instruments has sumthun called NI-Max, which will setup and confirm that the adapter is working. This particular cable (Female to Female) was just what I was looking for. The (older than dirt) oscilloscope I was trying to talk to - only had a RS232 communication port with a Male 9 pin cannon connector. The USB to RS232 adapter had a Male 9 pin cannon connector. The Null cable is configured such that it expects to screw on to threaded sockets. The oscilloscope had them, the adapter did not. It still works - you just can't jiggle the connects much. Using NI-Max, I was able to send an inquiry to the scope, that Identified itself. The automated testing software had no trouble running its tests. Caveats: Not all Null Cables are created equal. All my application required was requiring that pins 2 and 3 be rolled. More complicated Null Cables may incorporate jumpers in the back shells of the 9pin cannons, which I don't believe this cable has. This cable rolls pins 2 and 3 - pins 1, 5 and 9 feed straight thru. I couldn't find any jumpers. It seems well made. It works. What more can you ask for?

Does what you need it to do.

Cable quality is good, true null modem RS-232 cable. Worked for router management. Great service from Amazon.

Works great and the quality is very good. Update: Removing 2 stars because it does not work with Cisco SG300 switches.