Connect Cooling Fans; Install System Memory - Biostar B550MX/E PRO Manual

2.3 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.
CPU_FAN: CPU Fan Header
SYS_FAN1/ SYS_FAN2: System Fan Header
Note
» CPU_FAN, SYS_FAN1/ SYS_FAN2 support 4-pin and 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).

2.4 Install System Memory

DDR4 Modules
B550MX/E PRO | B550MH/E PRO
Pin Assignment
1 Ground
2 +12V
3 FAN RPM rate sense
4 AI Fan Control
Pin Assignment
1 Ground
2 +12V
3 FAN RPM rate sense
4 AI Fan Control
Chapter 2: Hardware installation | 11