From left to right here's what's inside the system.

1. Slot 1 - Processor Technology 3P+S
2. Slot 2 - Fulcrum VIO-X video card
3. Slot 3 - Morrow Disk Jockey 2D Controller
4. Slot 4 - BAD SLOT
5. Slot 5 - Unused
6. Slot 6 - Unused
7. Slot 7 - Unused
8. Slot 8 - Unused
9. Slot 9 - Unused
10. Slot 10 - Unused
11. Slot 11 - Fulcrum Omniram 64KB Static card
12. Slot 12 - North Star ZPB-A 4MHZ Z80 processor card