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1-12 Chapter 1: Product introduction
1.6 Central Processing Unit (CPU)
The motherboard comes with an AM2+ / AM2 socket designed for AMD®
Phenom™ FX / Phenom / Athlon™ / Sempron™ processor.
The AM2+/AM2 socket has a different pinout from the 940-pin socket designed
for the AMD Opteron processor. Ensure you use a CPU designed for the
AM2+/AM2 socket. The CPU ts in only one correct orientation. DO NOT force
the CPU into the socket to prevent bending the connectors on the socket and
damaging the CPU!
1.6.1 Installing the CPU
To install a CPU.
1. Locate the CPU socket on the motherboard.
2. Unlock the socket by pressing the
lever sideways, then lift it up to a
90°-100° angle.
Ensure that the socket lever is lifted up to 90°-100° angle, otherwise the CPU
does not t in completely.
Socket lever
M3A78-EM CPU Socket AM2+
R
M3A78-EM