System Memory; Overview - Advantech SIMB-M21 User Manual

4. Connect the CPU fan cable to the connector on the motherboard labeled
CPU_FAN.
Important! Do not forget to connect the CPU fan connector! Hardware monitoring
errors can occur if you fail to plug this connector.
2.5

System Memory

2.5.1

Overview

The motherboard comes with four 204-pin Double Data Rate 3 (DDR3) Small Outline
Dual Inline Memory Modules (SO-DIMM) sockets.
A DDR3 module has the same physical dimensions as a DDR SO-DIMM but has a
204-pin footprint compared to the 204-pin DDR2 DIMM. DDR3 DIMMs are notched
differently to prevent installation on a DDR2 DIMM socket. The following figure illus-
trates the location of the sockets:
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