CableWholesale 31D1-16210 Modular Adapter, Gray, DB9 Male to RJ12 Jack

I wish serial devices would stick to a few basic pinouts, but they do not. You can make any reasonable combination that you want with this without too much fuss.

[Something Most Sane People will Never Need.]As for the rest of use, condolences.It's ok.Worked for me.Be advised;There is no pinout information on the bag, in the bag, on the shell, etc.No big deal.Just ring out the leads with a continuity meter.You have no continuity meter - you say.Then use the Force.One can peer into the back shell with a flash light - and, make a semi-educated guess.Once I had the pinout established, I was faced with deciding which colored wire should go in to which hole.Sounds simple enough.Should have been simple enough.The schematic drawing I had to go by was logically impossible to comply with.Once again, Use the Force - Luke.The bag should have included a socket extraction tool.Fortunately, I had one.Three attempts later - and, I still had issues.By not following the manufacturer's instructions.And, by following established RS232 conventions, I managed to get it to work.Summary:It is quite useful.If you get it right the first time, you won't need an extraction tool.I'd recommend it.Expect to put in more time and effort than expected.

It works

For anyone who needs it, the manufacturer (StarTech) has a datasheet on their website with the pinout information. (i attached an image of it as well)

It served its purpose then fried and burned the house down.

Needed some adapters with custom pinouts. Didn't want to do the soldering. This solved the problem perfectly. Works as advertised.