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2.5 Pin Header Easy Installation Guide
ASRock motherboard is equipped with pin headers with obvious colors which indi-
cate you to recognize the crucial headers more easily. Please refer to below illustra-
tions for the pin definition of onboard headers. If you want to have more information
about the usage of these headers, please refer to "Jumpers Setup" and "Onboard
Headers and Connectors" for details.
GND
PRESENCE#
MIC_RET
1
MIC2_R
MIC2_L
Front Panel Audio Header
OUT_RET
Chassis Speaker Header
OUT2_L
J_SENSE
OUT2_R
ASRock AD2550-ITX Motherboard
USB_PWR
1
USB_PWR
USB 2.0 Header
1
System Panel Header
SPEAKER
DUMMY
DUMMY
+5V
P-
P+
GND
DUMMY
GND
P+
P-
PLED+
PLED-
PWRBTN#
GND
1
DUMMY
REST#
GND
HDLED-
HDLED+
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