Central Processing Unit (Cpu) - Asus P I-P55TP4N User Manual

III. INSTALLATION

3. Central Processing Unit (CPU)

The motherboard provides a 321-pin ZIF Socket 7 that is backwards com-
patible with ZIF Socket 5 processors. The CPU that came with the mother-
board 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.
WARNING: Without a fan, the CPU can overheat and cause damage
to both the CPU and the motherboard. (See page 22 "CPU Cooling
Fan Connector).
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 mother-
board 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 "CPU to BUS Frequency
Ratio" and jumpers for "BUS Frequency Selection" on page 10 de-
pending on the CPU that you install.
ZIF Socket 7 with Pentium Processor
P/I-P55TP4N User's Manual
Lever
Lock
Blank
White Dot
15