Asus P2B-D User Manual page 21

III. INSTALLATION
3. Mount the Dual Processor Retention Mechanism: The dual processor reten-
tion mechanism is designed to fit into the SEC slots only one way.
Be sure to align the notches in the retention mechanism with the small ribs (see
preceding figure) on each side of the slots and that the mechanism is properly
seated on the board. Then, screw the captive nuts in place.
WARNING! Do not overtighten the captive nuts. Doing so could damage your
motherboard. Tighten captive nuts to no more than 6±1 inch/pound.
Captive nut
4. Mount the Heatsink: Place the SEC cartridge face down on a flat surface and lay
the heatsink flush on the back (metal side) of the SEC cartridge. Be sure that the
heatsink is firmly pressed against the SEC cartridge. When correctly installed,
no light can be seen between the thermal pad of the heatsink and the SEC car-
tridge.
IMPORTANT: The heatsinks must not be more than 2.8 cm (1.1 inch) thick.
WARNING! If the heatsink is not mounted tightly against the SEC cartridge,
the CPU will overheat. You may install an auxiliary fan to provide adequate
circulation across the processor's passive heatsink.
The thermal pad & SEC cartridge should not have a gap!
ASUS P2B-D/P2B-DS User's Manual
Push each end of the clamps until they lock
SEC Cartridge with Heatsink (Top View)
Captive nut
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