Connectors are too far inside the rackmount P-SPM

If it seems like the green connectors on the back of a wallmount P-SPM have recessed into the chassis, then the plastic screws that hold the inside together have probably come loose. Power down the unit, remove the top five screws, and look inside.

As shown above, the middle section has slid down and will have to be slid back up so that the connectors on the left and right side (circled in green) are reattached. Secure the three black screws (circled in red) very tightly, and close up the unit.