[Q] can PySerial work with a USB to serial adapter ?

[Rikko]

> I'm trying to use PySerial with Python 2.2.2 on an XP system
> with a USB to RS232 adapter.
> Upon opening the port (making an instance of the Serial class)
> the system return the error message "unable to open file",
> thereby referring to the COM1 port used.

FIXED, figured it out myself.
a usb->serial adapter driver installs itself on the next free comport
number.
For my notebook that meant that it was installed AFTER the built-in modem,
so that was COM3.
Rik.