HPE ProLiant ML350 Gen11

e. Use a T-30 Torx screwdriver to tighten one pair of diagonally opposite heatsink screws (callouts 1 to 2), and then tighten the other
pair of heatsink screws (callouts 3 to 4).
Standard heatsink
Performance heatsink
8. Set the anti-tilt wires to the locked position.
HPE ProLiant ML350 Gen11 Server Maintenance and Service Guide 127