Remove the three screws from the Left Mounting Bracket

Two different ways to the next step, dependent on experience and/or confidence.

Move the the Mounting Bracket over while extending the Stapler Cable out of the way, The Stapler cable does not have to disconnected.

Remove the Stapler Cable and Mounting bracket from the printer frame while feeding the cable through the redrive unit and printer frame.

Using a pair of pliers, squeeze the nylon mounts to dislodge the stapler connector, and remove the cable.

Remove the three screws from the Right mounting bracket.