ASROCK B450D4U-V1L User Manual page 39

X470D4U:
Baseboard Management
Controller SMBus Header
(5-pin BMC_SMB_1)
(see p.7, No. 34)
PWM Configuration
Header
(3-pin PWM_CFG1)
(see p.7, No. 36)
Clear CMOS Pad
(CLRMOS1)
(see p.7, No. 25)
BMC_SMB_PRESENT_1_N
Power
BMC_SMBCLK
GND
BMC_SMBDATA
1
X470D4U / B450D4U-V1L
The header is used for the SM
BUS devices.
This header is used for PWM
configurations.
This allows you to clear the
data in CMOS. To clear CMOS,
take out the CMOS battery and
short the Clear CMOS Pad.
33