ASROCK PRO Series User Manual page 40

B550M Pro SE
Power LED and Speaker Header
(7-pin SPK_PLED1) (see p.6, No. 13)
Please connect the chassis power LED and the chassis speaker to this header.
SPK_PLED1
SPEAKER
DUMMY
DUMMY
+5V
1
PLED+
PLED+
PLED-
Serial ATA3 Connectors
Vertical:
(SATA3_1) (see p.6, No. 10)
(SATA3_2) (see p.6, No. 9)
Right Angle:
(SATA3_3) (see p.6, No. 11) (Lower)
(SATA3_4) (see p.6, No. 11) (Upper)
These four SATA3 connectors support SATA data cables for internal storage devices
with up to 6.0 Gb/s data transfer rate.
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