A501 Memory Expansion Card

A501 RAM expansion with 512 Kb for the Amiga 500
This card was inside the original shield in a A500. I had
to open it to check the clock battery for a possible leak

See also:
Commodore Amiga 500: Amiga 500
Working out the A501 leak: A501 card - leak work
New coin cell replacement in the A501: Soldering c. cell
A501 bug...real bug!!: A501 real bug