Incised on one of the four connectors, solder-side
4161320 A 6 560 76
Printed in white on all four connectors, component-side
overall: 1/2 in x 7 in x 4 1/2 in
One (1) logic module with four black plastic female connectors along the left edge. Both sides of the substrate are covered by a gridded field of square-shaped solder marks, and the front with various components.