Oracle Fujitsu SPARC M12-1 Service Manual page 211

Connect the cables to the MBU.
4.
The following cables are to be installed:
a. Three cables connecting the PSUBP to the MBU
b. One cable connecting the PSUBP to the HDDBP
Connect the cable to the PSUBP.
c. Two cables connecting the HDDBP to the MBU
d. Two cables connecting the OPNL to the MBU
Note - Reinstall the cables in their original positions by referring to the record that you made
before the start of maintenance.
Figure 16-14 MBU Cables
(c)
(d)
(b)
(a)
Chapter 16 Maintaining the Motherboard Unit/Memory 197