Those are not caps, they are diodes, and they are the voltage regulator. Connected in series, each has a small voltage drop. The advantage of using diodes in series is that the voltage drop is fairly immune to current fluctuation, as would be a serious issue with using series resistors. They are also cheaper than a real regulator.

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Yep. What Dennis said. I didn't see that until he mentioned it. The positions are labeled Dn rather than Cn. If each diode causes a .6V drop, that will take 5V down to 3.2V. Or it could be .5V drop or .7V drop...

Still, the SIMM doesn't work.

Single bank, 16M X 32, 5V SIMM with 12 X 12 chips. Another way of saying the 12 X 12 part is 4K refresh.

Also, eight chips. Twelve is okay if it's a parity SIMM. But not 32 chips.