You won't need documentation for this unit, if you're just going to use it. The on-board jumpers are readily decoded - Q22 C/D (For BA23/BA123 and similar) Q22/Q22 for H9275 and similar backplanes. W/BB or W/O BB - most folks won't have battery back-up for their CPU. Remove your current CPU and all memory, and install the 993 in slot one. Shift all of your other boards up accordingly. It uses the standard DEC 11/93 I/O bulkhead (which is also for sale by ISSCCorp.) It will probably start up asking for a boot device. Hit control-C twice to get to the boot menu, which will give you the option to get into the boot menu, setup menu, and diagnostics menu. You can completely configure the board from there. Enjoy ! T