The Unix configuration that it sold to commercial developpers is the following:
A2500 (with A2620 and 4 MB of 32 bit RAM)
A2090A with 80 MB Quantum Harddrive
150 MB tape backup (required because Unix is distributed on those tapes!)
KS/WB 1.3 (of course! 🙂
This is what they said a the developpers conference in Toronto.