Removing locks from the S5 that secure it during launch and lock it in place, relocating a radiator from its launch position to the bottom of the S5 to provide clearance for solar arrays to track the sun.

Moving a failed control moment gyroscope (CMG-3) to ESP-2, a new platform, ESP-3, was added to the station, disconnecting ESP-3 power cables to prepare it for permanent relocation to the station

Installing support equipment on the S1 truss that will allow for an addition to the inspection boom during the STS-123 mission, and installing a system to provide better wireless video coverage during future missions