System Memory; Overview - Asus M5A78L M LX User Manual

3. Align the other end of the retention bracket to the retention module base. A clicking
sound denotes that the retention bracket is in place.
Ensure that the fan and heatsink assembly perfectly fits the retention mechanism module
base, otherwise you cannot snap the retention bracket in place.
4. Push down the retention bracket lock on the retention mechanism to secure the
heatsink and fan to the module base.
5. When the fan and heatsink assembly is in place, connect the CPU fan cable to the
connector on the motherboard labeled CPU_FAN.
DO NOT forget to connect the CPU fan connector! Hardware monitoring errors can occur if
you fail to plug this connector.
1.7

System memory

1.7.1

Overview

The motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Modules
(DIMM) sockets. The figure illustrates the location of the DDR3 DIMM sockets:
M5A78L-M LX
M5A78L-M LX 240-pin DDR3 DIMM sockets
ASUS M5A78L-M LX
Channel
Channel A
Channel B
Sockets
DIMM_A1
DIMM_B1
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