ESI-32 Memory

Standard memory = 2MB.
Maximum memory = 32MB.

The ESI-32 has 2 SIMM slots.

The ESI-32 takes 30-pin standard SIMM cards.
SIMM Speed = 60nS
The SIMMs can be parity or non-parity (but do not mix types!)

ESI-32 supports 1MB, 4MB, 8MB, or 16MB SIMMs.

They must be an equally sized pair - in fact, they should be a matched pair in every respect - size, parity, and speed.

So...

2x1MB = 2MB (shipping configuration)
2x16MB = 32MB (maximum configuration)