Chapter 2: Hardware Installation; Connect Cooling Fans; Install System Memory - Biostar J4105TH Manual

2.1 Connect Cooling Fans

These fan headers support cooling-fans built in the computer. The fan cable and connector
may be different according to the fan manufacturer.
SYS_FAN1/2: System Fan Header
Note
» SYS_FAN1/2 support 3-pin head connectors. When connecting with wires onto connectors, please
note that the red wire is the positive and should be connected to pin#2, and the black wire is Ground
and should be connected to pin#1(GND).

2.2 Install System Memory

DDR4 SO-DIMM Modules

Chapter 2: Hardware installation

Pin Assignment
1 Ground
2 +12V
3 FAN RPM rate sense
Chapter 2: Hardware installation | 7
J4105TH