Works great with my HP200lx and its included Datacomm software. I used a WiFi retro modem to connect to some BBS. Works great with my Altair 8800 clone machine too.
I've been looking for ages for an adapter like this one, simple but reliable.
If you have one of these HP computers, you NEED one!
I'm not too fussed about any fancy bells or whistles like the charging or suspend yadayada, it brought new life to my old boi and even makes the HDD work reliably now (whereas it didn't before!) Easy to install, replacement wires provided too, thankyou so much! :)