SUPER MICRO Computer X7SBL-LN1/LN2 - Manual (Page 23)

Chapter 2: Installation
2-5
1. Do not apply any thermal grease to
the heatsink or the CPU die, the required
amount has already been applied.
2. Place the heatsink on top of the
CPU so that the four mounting holes
are aligned with those on the retention
mechanism.
3. Screw in two diagonal screws (eg. the
#1 and the #2 screws) until just snug (do
not fully tighten the screws, which may
damage the CPU).
4. Finish the installation by fully tighten-
ing all four screws.
Installation of the Heatsink
Screw 1
Screw 2