HP ProLiant DL180 Gen9 User Manual page 49

Install the storage controller. Verify that the board is firmly seated in the slot.
b.
Connect the 630-mm Mini-SAS Y-cable:
10.
Connect the common end of the Mini-SAS Y-cable to the controller option.
a.
Install the primary PCI riser cage
b.
Route the split ends of the Mini-SAS Y-cable through the cable clip on the air baffle, and then
c.
connect the cable to the drive backplane.
("Install the PCI riser cages" on page 26).
Hardware options installation 49