> On Dec 21, 2015, at 12:54 , Geoffrey Oltmans <oltmansg at gmail.com> wrote: > > That is an odd connector. It's compatible with an ordinary 9-pin D-sub, but with a shell that latches onto ramps on the mating connector. Squeezing the shell releases the latch. -- Mark J. Blair, NF6X <nf6x at nf6x.net> http://www.nf6x.net/