The Apollo 11 astronauts were connected to the spacecraft communications system while in their suits by means of cables. Each astronaut was provided a cable (shorter ones for the left and center seats nearest the communications unit on the left side of the spacecratf forward equipment bay, and a longer one for the right seat). In case of equipment difficulty a spare (long) cable was provided and stowed in a locker inside the Command Module. This flown spare Apollo 11 Communications Control Unit cable was transferred to the Smithsonian in 1970.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.