Hello, I've been trying to install OpenBSD on
an old Debian box but has been unsuccessful
because when I get to the (I)nstall prompt the
USB keyboard is unresponsive.

I tried the USB port with a USB powered lamp
and it has power.

Also I tried with a PS/2 adapter but it is
still nonresponsive on any input, the keyboard
itself is dead and do not react to CAPS
(i.e., no light).

I tried two different keyboards. Ideas? TIA

OpenBSD 6.6 amd64 CD-R

CPU type AMD Athlon 64 X2 Dual Core Processor 3800+

Re: BIOS USB options, "USB Legacy Mode Support"
is set to "Auto".

There are no BIOS USB speed settings what
I can see.

There is no USB hub what I can see.

One theory on #openbsd@irc.freenode.net was
that the USB controller isn't supported
by OpenBSD.