The refit included an update of the flight deck to the glass cockpit layout, which was already installed on Atlantis and Columbia.

The Multi Purpose Logistics Module (MPLM) taken on STS-105 contained additional scientific racks, equipment and supplies.

EXPRESS Racks 1 and 2A were delivered aboard the Raffaello cargo module during STS-100/6A in April 2001.

The total weight of cargo, racks and packing material aboard Leonardo was just over 4,990 kilograms (11,000 lb).

Another payload on board is the Materials International Space Station Experiments (MISSE).

PECs are suitcase-like containers for transporting experiments via the space shuttle to and from an orbiting spacecraft.

Once on orbit and clamped to the host spacecraft, the PECs are opened and serve as racks to expose experiments to the space environment.

[5][6] NASA began a tradition of playing music to astronauts during the Gemini program, which was first used to wake up a flight crew during Apollo 15.