ASROCK B550D4U User Manual page 17

No. Item
1 SB_PWR1
2 FAN_LED1
3 FAN_LED3
4 FAN_LED2
5 FAN_LED4
6 FAN_LED5
7 FAN_LED6
8 BMC_LED1
10
Status Description
Green STB PWR ready
Amber FAN1 failed
Amber FAN3 failed
Amber FAN2 failed
Amber FAN4 failed
Amber FAN5 failed
Amber FAN6 failed
Green BMC heartbeat LED