It will be attached to the PAYLOAD bay...
The Big Bang Theory Season 1, Episode 12
"Payload Specialist Howard
Wolowitz is requested
The Big Bang Theory Season 5, Episode 18
A small PAYLOAD support structure for
a European science experimental package...
The Big Bang Theory Season 1, Episode 12
What a remarkably fragile structure
to support such a valuable PAYLOAD.
The Big Bang Theory Season 4, Episode 24
and Payload Specialist
Howard Wolowitz."
The Big Bang Theory Season 5, Episode 15