Ok, OpenBSD experts: I'm seeing this when I plug in (what I assume is a serial device) to an OpenBSD 6.3 box:

ugen2 at uhub3 port 2 "Prolific Technology Inc. USB-Serial Controller" rev 1.10/3.10 addr 4

Shouldn't I be seeing an additional line in dmesg telling me which ucom device it is? I'm stabbing around with `cu -s 9600 -l /dev/cuaU3' but keep getting

cu: open("/dev/cuaU3"): Device not configured

(cuaU0 -- U2 respond from a built-in modem)

How do I solve this?

@jpmens It doesn't attach as a ucom, so you can't use cu to access it. OpenBSD supports Prolific PL-2303 USB serial adapters so if this one is compatible it's manufacturer and product IDs must be added to the table in /sys/dev/usb/uplcom.c. Run "usbdevs -v" to get those IDs and either add them to that table directly or add new manufacturer/product ID defins via /sys/dev/usb/usbdevs and use those if you know what you're doing. Otherwise just send the dmesg and output of "usbdevs -v" to tech@.

@mike Thank you. I've sent the e-mail with what I hope are all the details. Much appreciated.

@mike let the record show I got a source patch. Mil gracias.

Now I have to find the time to learn how to build from source and actually do that.

JP Mens

@mike and all of you together rock!

Thank you for kicking me into the correct direction. As you can see, that was successful. :-)

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