Asus Prime X399-A User Manual page 42

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Remove the external cap.
External cap
Gently press down the rail frame
until it latches to the socket housing,
then press down the load plate.
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The load plate screws are Torx T20 models. A torque value of 14 inch-lbf is recommended.
Apply the Thermal Interface Material to the CPU heatsink and CPU before you install the
heatsink and fan if necessary.
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Carrier frame
with CPU
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Slide the carrier frame with CPU into the
rail frame until you hear a click sound, then
remove the PnP cap.
Carrier frame
with CPU
B
PnP cap
B
B
Drive the three screws slightly into the
holes in sequence 1>2>3, just enough to
attach the load plate to the socket. When
the three screws are attached, tighten
them in sequence 1>2>3 to completely
secure the load plate. Then apply the
Thermal Interface Material to the CPU.
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Chapter 2: Basic Installation
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