Canon imageRUNNER ADVANCE 4551i Service Manual page 1072

5.
2x
NOTE:
The removed screws will be used in step 7.
6.
NOTE:
Disconnect the HDD Cable from the HDD Connector
Support Plate, and replace it with the iVDR Cable 1 (Red)
(A: HDD-Sig1/Pow1) (The removed cable will not be
used).
1059
9. Installation
2x
A:HDD-Sig1/Pow1 (Red)
2x