ASROCK phantom gaming Z790 PG LIGHTNING User Manual page 33

Power LED and Speaker Header
(7-pin SPK_PLED1) (see p.6, No. 20)
Please connect the chassis power LED and the chassis speaker to this header.
28
SPK_PLED1
SPEAKER
DUMMY
DUMMY
+5V
1
PLED+
PLED+
PLED-