USB->Serial adapter, how to make /dev/cuad* appear?

Ian Smith smithi at
Tue Oct 23 23:52:06 PDT 2007

On Tue, 23 Oct 2007 18:06:08 +0200 Benjamin Lutz <mail at> wrote:

 > I've bought an USB->Serial adapter in order to use an old serial 33.6k 
 > modem. I've loaded the uplcom and ucom modules, but am unsure how to 
 > proceed from here.
 > The system runs FreeBSD 6.2-RELEASE-p8. When connecting the adapter, 
 > dmesg says:
 >   ucom0: Prolific Technology Inc. USB-Serial Controller D, rev 
 >   1.10/4.00, addr 3
 > usbdevs -v says:
 >   port 6 addr 3: full speed, power 100 mA, config 1, USB-Serial
 >   Controller D(0x2303), Prolific Technology Inc.(0x067b), rev 4.00
 > I'd expect some device to show up in /dev, cuad1, ucom0, something like 
 > that, but I get nothing. (cuad0 is taken by the onboard serial port, 
 > which, alas, isn't wired to the outside of the case).

Perhaps you need to load umodem(4) also?

Cheers, Ian

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