vintage AST SixPak Plus Memory RAM expansion ISA card ($100)
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CONDITION: This was pulled from a "Compaq Portable Plus" that did not boot -- I don't think it was because of this board (MFM hard drive was dead) but I haven't tested it otherwise.
The SixPakPlus is a multi-function Memory Expansion board designed for the IBM PC and XT and 100% compatibles running at 4.77 MHz.