Printed circuit board
||On white sticker on top left corner
||Stamped on bottom middle of board. The "Z" is handwritten.
||90612-06 REV 2
||On blank and white sticker on top front of board
||Stamped on bottom rear of board
overall: 1/2 in x 12 in x 4 1/2 in
"SPEED" is stamped on top right edge. "ART REV-J" and "FAB REV-K" is stamped on bottom right corner.