Asus M3A78-T - Manual (Page 30)

2-6 Chapter 2: Hardware information
2.3.1 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
90º angle.
2.3 Central Processing Unit (CPU)
The motherboard comes with an AM2+/AM2 socket designed for AMD AM2+/AM2 socket designed for AMD socket designed for AMD AMD ® Socket
AM2+ Phenom™ FX / Phenom / Athlon™ / Sempron™ processors or for Socket Phenom™ FX / Phenom / Athlon™ / Sempron™ processors or for Socket
AM2 Athlon series / Sempron processors.
Socket lever
The AM2+/AM2 socket has a different pinout from the 940-pin socket designed
for the AMD Opteron processor. Make sure you use a CPU designed for the
AM2+/AM2 socket. The CPU fits 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!
Make sure that the socket lever is lifted up to a 90º angle; otherwise, the CPU
will not fit in completely.