User guide

1-10 Chapter 1: Product introduction
1.6 Central Processing Unit (CPU)
The motherboard comes with a 940-pin AM2+ socket designed for AMD
®
Phenom™FX / Phenom™ / Athlon™ / Sempron™ processors.
The AM2+ socket has a different pinout from the 940-pin socket designed for
the AMD Opteron™ processor. Ensure that you use a CPU designed for the
AM2+ socket. The CPU ts in only one correct orientation. DO NOT force the
CPU into the socket to prevent bending the pins 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
M3N78-AM
M3N78-AM CPU Socket AM2+