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Can anyone identify this mystery IIci Cache Card?


My Apple branded IIci cache card died a while ago (I had recapped it and it worked well for about three years, but then gave up the ghost, sadly) and I've been looking for a new one. This mystery card showed up on eBay and the price was alright, so I decided to throw caution to the wind and buy it.

Long story short, it works just fine. I see about a 15% to 20% speed improvement. It has a weird arrangement of eight 16K x 4 static RAMs and then four 4K x 4 static RAMs. No other info. It also had one physically broken bypass cap (C20), which I replaced. Does anyone have any ideas who made it?