ECD SmartDRY SD Series Setup And Operation Manual page 84

Step 2 - Replace the Power Board:
1) Place the new Power Board onto the standoffs. Note the board's orientation.
2) Replace the 5 mounting screws on the four corners and center of board.
SD Series Dry Cabinets Setup and Operation Manual | A62-3337-00 Rev: 1.0.0 Page 78