On Sun, 31 Jan 1999, John Amirault wrote: This was HP's "transition machine" from after they bought Apollo in 1989. It's mostly like an updated Apollo DN-series machine, that uses a few of the same parts, most of the same ideas, and SCSI disks. It'll run Apollo's Domain/OS with the Domain keyboard, or HP's HP-UX (up to 9.05, the last version to support Motorola CPUs) with an HIL keyboard. If it's an actual 400 that hasn't been upgraded, it's a 50 MHz 68030 processor, with 68882 FPU. The ISA slot is limited to which cards it will take (functionality is cut down so it's not a true ISA anymore.. just enough to run the Apollo Token Ring card, or maybe the 3C505 ethernet). The memory subsystem supports up to 16 MB per slot. If you can get the part number off the memory cards, I can tell you what their capacity is. The part number should start with something like 98229- or the letter 'A'. Approximate date of manufacture is likely ca. 1991. ok r.