Gigabyte B450 GAMING X User Manual page 17

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11) SPDIF_O (S/PDIF Out Header)
This header supports digital S/PDIF Out and connects a S/PDIF digital audio cable (provided by expansion
cards) for digital audio output from your motherboard to certain expansion cards like graphics cards and
sound cards. For example, some graphics cards may require you to use a S/PDIF digital audio cable for
digital audio output from your motherboard to your graphics card if you wish to connect an HDMI display
to the graphics card and have digital audio output from the HDMI display at the same time. For information
about connecting the S/PDIF digital audio cable, carefully read the manual for your expansion card.
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12) F_PANEL (Front Panel Header)
Connect the power switch, reset switch, speaker, chassis intrusion switch/sensor and system status indicator
on the chassis to this header according to the pin assignments below. Note the positive and negative pins
before connecting the cables.
_USB3 F_USB30 3
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1
Power LED Power Switch Speaker
2 20
1 19
Hard Drive Reset Power LED
Activity LED Switch
Chassis Intrusion
Header
• HD (Hard Drive Activity LED, Blue):
Connects to the hard drive activity LED on the chassis front panel. The LED is on when the hard drive
is reading or writing data.
• RES (Reset Switch, Green):
Connects to the reset switch on the chassis front panel. Press the reset switch to restart the computer
if the computer freezes and fails to perform a normal restart.
• CI (Chassis Intrusion Header, Gray):
Connects to the chassis intrusion switch/sensor on the chassis that can detect if the chassis cover has
been removed. This function requires a chassis with a chassis intrusion switch/sensor.
• NC (Orange): No Connection.
The front panel design may differ by chassis. A front panel module mainly consists of power switch,
reset switch, power LED, hard drive activity LED, speaker and etc. When connecting your chassis
front panel module to this header, make sure the wire assignments and the pin assignments are
matched correctly.
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Pin No. Definition
1 5VDUAL
2 No Pin
3 SPDIFO
4 GND
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• PLED/PWR_LED (Power LED, Yellow/Purple):
Connects to the power status indicator
System Status LED
on the chassis front panel. The LED is on
S0 On
when the system is operating. The LED is
S3/S4/S5 Off
off when the system is in S3/S4 sleep state
or powered off (S5).
• PW (Power Switch, Red):
Connects to the power switch on the chassis front panel. You may
configure the way to turn off your system using the power switch (refer
to Chapter 2, "BIOS Setup," "Power," for more information).
• SPEAK (Speaker, Orange):
Connects to the speaker on the chassis front panel. The system reports
system startup status by issuing a beep code. One single short beep
will be heard if no problem is detected at system startup.
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