Interesting. If you look at the daughtercard on the PDQ-1000 (next to
the probably-a-pentium-ish-CPU-fan), it looks pretty much like a PC/104
connector (upside down, of course) and the back panel port config is
oh-so familiar. I'm betting a bog-standard embedded X86 system (new
enough to have PCI) with a QBus interface running an emulator.
As to the PDQ-2000 and -3200, I bet those are just Intel motherboards in
a rackmount case. Chris Elmquist pointed out the CCI1016 looks (to me
as well) to be a Comtrol RocketPort. The CEI-1000 is pretty clearly one
of the myriad of Intel desktop Ethernet adapters. Their DQP-1100, -1300
and -1500 are DRV11 work-alikes made by Logical.