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14) 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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15) GAIN (Audio Gain Control Switch)
The switch allows for audio gain control for the headphone/speaker out jack on the back panel. Please set
it according to your headphone specification (actual effects may vary by the device being used).
B_
F_USB30
16) F_USB30_1/F_USB30_2 (USB 3.1 Gen 1 Headers)
The headers conform to USB 3.1 Gen 1 and USB 2.0 specification and can provide two USB ports. For
purchasing the optional 3.5" front panel that provides two USB 3.1 Gen 1 ports, please contact the local
dealer.
Pin No. Definition
1
1
2
USB 0_ B
1: 2.5x (Default)
1
2
2: 6x
F_ U
Pin No. Definition
1
20
1
2
3
4
B_
5
6
7
11
10
8
9
10
Prior to installing the USB bracket, be sure to turn off your computer and unplug the power cord
from the power outlet to prevent damage to the USB bracket.
S
3
_
SPDIFO
GND
B_
Pin No. Definition
VBUS
11
D2+
SSRX1-
12
D2-
SSRX1+
13
GND
GND
14
SSTX2+
B S S
SSTX1-
15
SSTX2-
SSTX1+
16
GND
1
GND
17
SSRX2+
D1-
18
SSRX2-
D1+
19
VBUS
NC
20
No Pin
S
1 2 3
S
- 20 -
B S S
S
F_
_S
U
F_
S
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