JP1 Remotes

I just found out that my IOGear USB serial port does not function with my JP1.X interface.

Model: GUC232A

It will pass a direct 2-3 loopback, but a JP1.X 1-3/4-6 loopback garbles the signal. (My JP1.X works fine on normal serial ports.)

Soooo.....

Can someone recommend:
A USB-Serial Adaptor
A Serial PCI or PCIe card?

I'd prefer recommendations that have been tested to work.

This one works for me.

Thanks... I'll check it out.

that appears to be the same one I'm using in the Parallels VM running Vista on my Mac and all is well.

I managed to swap my GUC232A with a colleague's, and his worked fine.

His seemed to have a different PWA and label layout. My GUC232A had a large crystal on the topside, but his doesn't.

Odd...

I also got one of those HL USB-RS232 cables.

Mine has HL-340 imprinted on the serial port connector. It works fine in Windows, but there's no Linux driver for it. I don't have a Mac to try it.