ASROCK PHANTOM GAMING B650I LIGHTNING WiFi User Manual page 44

Please refer to the table below for PLED (System Power LED) indications.
Status
Blinking (2Hz)
On
Blinking till BFG
On
Blinking (1Hz)
Serial ATA3 Connectors
(SATA3_1) (see p.6, No. 9)
(SATA3_2) (see p.6, No. 8)
These two SATA3 connectors support SATA data cables for internal storage
devices with up to 6.0 Gb/s data transfer rate.
40
Description
Booting into system
Booting completed
DRAM overclocking failed
Booting without DRAM
Entering S3 sleep mode