Asus M3N78-AM - Manual (Page 22)

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 fits 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 fit in completely.
Socket lever
M3N78-AM
M3N78-AM CPU Socket AM2+