Bus
From The Glossary of Digital Photography
(1) A signal path between multiple devices within a computer or on an integrated circuit. (2) A wire bundle or cable. (3) A pathway on a circuit board.

ONLINE GLOSSARY OF DIGITAL PHOTOGRAPY
(1) A signal path between multiple devices within a computer or on an integrated circuit. (2) A wire bundle or cable. (3) A pathway on a circuit board.