Pr5inted on the solder side near the 25-pin connector
Silkscreened after letters "SCH"
overall: 1 1/8 in x 10 5/8 in x 7 1/4 in
Object is a printed circuit board with one large IC, one 25-pin connector, one edge connector, and one transformer. Wires for a number of engineering changes can be seen on the solder side of the board.