First post, by pentiumspeed
Picked up this and I do have single pentium processor card in the mail to go with this motherboard and memory expansion card set. Actually made by Intel. I do not know what model this was, also could not find service manuals for these. Really much needed the information about these.
General pic of this board with processor card, memory slots is behind the processor card: Linked from one website, but I don't think the xpress name is correct for this.
Chipsets is two XPD, XPC and S82374SB PCIset and S82375SB PCIset. Pair of Adaptec AIC7870P, a ultra Wide SCSI controller chipsets. CL-GD5424 with 1MB installed.
Makers used these same boards made by Intel: Fujitsu, NEC, NCR, even Dell.
For now till I post mine, photos I used the sellers' links that I bought: How can I put photos that I took to share here?
System board (just slots and chipsets) is 5 PCI slots, and 6 EISA slots. Two 68 pin wide SCSI ports at edge, one IDE, one floppy connectors and 34pin IDC 2.54mm front panel with one pin missing in middle.
Ports is VGA, PS/2 serial port, parallel. No USB since this board was made around 1995 or so.
NCR 530-0041043 3415 SINGLE CPU PROCESSOR BOARD PBA 641365-002 for NCR 3415.
NCR 530-0041021 3415 DUAL CPU PROCESSOR BOARD PBA 630214-102.
Can take one or two expansion memory cards, each bank takes 4 parity SIMMs at a time. Up to 3 banks, 12 SIMMs total on each card. I was careful to verify type of simms as there were several memory expansion cards with memory modules filled. These all has parity SIMMs.
There are 2 slots for processor card. Each processor card consists of single processor or another card with dual processors, up to 4 processors total.
Great Northern aka Canada.