You might want to look here,
http://www.amiga-hardware.com/microz3imkiibusb.html. This sounds like your board and you can find a 'manual' there...
Unfortunately, if this is your busboard, it is not an "active" PCI busboard like the Mediator, Prometheus, or G-REX. The PCI slots on your board are "passive". In other words, you won't be able to use PCI cards with it... Not unless some one 'hacks' together a bridgeboard like the GoldenGate Bridge II+ (
http://www.amiga-hardware.com/gg2.html) for PCI cards.
