HP ProLiant ML10 User Manual page 25

Pull the cables out.
b.
Remove the drive:
9.
Unfasten and remove the four T-15 screws connected to the drive cage.
a.
Slide out the drive to remove it.
b.
Disconnect the 24 pin power supply cable:
10.
Release the cable tie securing the 24 pin power supply cable.
a.
Hardware options installation 25