Oracle Fujitsu SPARC M12-1 Service Manual page 174

Connect the one cable that connects the PSUBP to the HDDBP.
5.
Figure 12-8 HDDBP Cable
6. Store the connected cables in the cable guide, and lock the guide.
For details, see
If the cable guide does not have a lock, proceed to step 8.
160 Fujitsu SPARC M12-1 Service Manual • January 2023
"6.1.1 Locking the Cable Guide."