Asus P/I-P55SP4V - Manual (Page 21)

ASUS P/I-P55SP4V User’s Manual 15
III. INSTALLATION
3. Central Processing Unit (CPU)
The motherboard provides a 321-pin ZIF Socket 7 that is backwards compatible
with ZIF Socket 5 processors. The CPU that came with the motherboard should
have a fan attached to it to prevent overheating. If this is not the case then purchase
a fan before you turn on your system. Apply thermal jelly to the CPU top and then
install the fan onto the CPU.
Orientate the fan so that the heat sink fins allow air
flow to go across the onboard heat sink(s) instead of the expansion slots.
WARNING: Without a fan, the CPU and motherboard heatsink(s) can over-
heat and cause damage to both the CPU and the motherboard.
To install a CPU, first turn off your system and remove its cover. Locate the ZIF
socket and open it by first pulling the lever sideways away from the socket then
upwards to a 90-degree right angle. Insert the CPU with the correct orientation as
shown. Use the notched corner of the CPU with the white dot as your guide. The
white dot should point towards the end the of the lever. Notice that there is a blank
area where one hole is missing from that corner of the square array of pin holes and
a "1" printed on the motherboard next to that corner. Because the CPU has a corner
pin for three of the four corners, the CPU will only fit in the one orientation as
shown. The picture is for reference only; you should have a CPU fan that will cover
the face of the CPU. With the added weight of the CPU fan, no force is required to
insert the CPU. Once completely inserted, hold down on the fan and close the
socket's lever.
IMPORTANT: You must set jumpers for "BUS Frequency Selection" and
jumpers for "CPU to BUS Frequency Ratio" on page 10 depending on the CPU
that you install.
(CPU)
III. INST
ALLA
TION
Blank
Lever
Lock
White Dot
ZIF Socket 7 with Pentium Processor