We have been using this RS232 USB hub here: Serial Gear
It is required for a POS application, since the PC requires many COM ports.
Our problem is the linked hub is absolutely terrible. It has driver issues, gives BSOD, and if you unplug and plug it back it the ports get renumbered almost randomly.
Our programmers also complain of having to restart windows when the application changes the baud rate, etc.
Does anyone know of a good USB->RS232 solution that doesn't suffer from these issues?
We are running Windows XP SP3, and need anywhere from 4-8 ports.
UPDATE: We found a newer driver on SerialGear's website. We are going to try that out, but also look into some of your links, guys.