ASROCK X370M Pro4 R2.0, Manual, Page: 30 / 179

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Power LED and Speaker
Header
(7-pin SPK_PLED1)
(see p.1, No. 15) Please connect the
chassis power LED and
the chassis speaker to this
header.
Serial ATA3 Connectors
(SATA3_1:
see p.1, No. 13)
(SATA3_2:
see p.1, No. 12)
(SATA3_3:
see p.1, No. 10)
(SATA3_4:
see p.1, No. 11) These four SATA3
connectors support SATA
data cables for internal
storage devices with up to
6.0 Gb/s data transfer rate.
* M2_2 and SATA3_3
share lanes. If either one
of them is in use, the other
one will be disabled.
AMD LED Fan USB
Header
(4-pin USB_5)
(see p.1, No. 9) This header is used for
connecting the USB
connector on the AMD
SR3 Heatsink.
USB 2.0 Headers
(9-pin USB_2_3)
(see p.1, No. 17)
(9-pin USB_2_4)
(see p.1, No. 18) There are two headers
on this motherboard.
Each USB 2.0 header can
support two ports.
1
+5V
DUMMY
PLED+
PLED+
PLED-
DUMMY
SPEAKER
DUMMY
GND
GND
P+
P-
USB_PWR
P+
P-
USB_PWR
1
SA
TA3_3
SA
TA3_4
SA
TA3_1
SA
TA3_2