Instruction Manual

1.6 Central Processing Unit (CPU)
The motherboard comes with a CPU socket designed for AMD
®
AM3 Phenom™ II /
Athlon™ X4 / Athlon™ X3 / Athlon™ X2 processors and AM2+ / AM2 Phenom™ X4 /
Phenom™ X3 / Athlon™ X2 / Athlon™ / Sempron™ processors.
The CPU socket is not compatible with AMD
®
Opteron™ processors. Do not install an
Opteron™ processor on this motherboard.
1.6.1 Installing the CPU
To install a CPU:
1. Locate the CPU socket on the motherboard.
2. Press the lever sideways to unlock
the socket, then lift it up to a 90°-
100° angle.
Socket lever
Ensure that the socket lever is lifted up to 90°-100° angle, otherwise the CPU will not t in
completely.
3. Position the CPU above the socket such that the CPU
corner with the gold triangle matches the socket corner
with a small triangle.
4. Carefully insert the CPU into the socket until it ts in place.
Gold triangle
Small triangle
The CPU ts only in one correct
orientation. DO NOT force the CPU into
the socket to prevent bending the pins
and damaging the CPU!
1-6
ASUS M4N78 PRO