USB Serial devices appearing as ugen instead of ucom

Carl Makin carl at
Tue May 6 16:53:11 PDT 2003

I just realised that the From address on this message was wrong and any 
responses would have bounced.  My apologies for that.  If there were any 
responses could you resend them please.


carl at

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Morning All,

I have a Keyspan USA-28X USB serial converter and a Telstra NT1 Plus II
(OPEN Networks Ltd) ISDN modem with USB connection that should both
appear as ucom devices (I think) but both appear as ugen instead.

They both get defined as serial devices using the manufacturer's device
drivers on both MacOS X and Windows.

I've been through the USB code as much as I'm capable and I'm lost as to
how to make these devices appear as ucom.  Trying to use the NT1 through
the ugen device causes a kernel panic.

Can anyone supply any hints?

This is on FreeBSD 4.8-RC (the last one before the release).



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