Gigabyte GA-H81M-S2PH User Manual page 16

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_USB1/F_USB2 (USB 2.0/1.1 Headers)
The headers conform to USB 2.0/1.1 specification. Each USB header can provide two USB ports via an
optional USB bracket. For purchasing the optional USB bracket, please contact the local dealer.
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• Do not plug the IEEE 1394 bracket (2x5-pin) cable into the USB header.
• 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.
13) COMB (Serial Port Header)
The COM header can provide one serial port via an optional COM port cable. For purchasing the optional
COM port cable, please contact the local dealer.
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14) TPM_HS (Trusted Platform Module Header)
You may connect a TPM (Trusted Platform Module) to this header.
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S
Pin No. Definition
1 SPDIFO
2 GND
Pin No. Definition
1 Power (5V)
2 Power (5V)
3 USB DX-
4 USB DY-
5 USB DX+
F_ U
Pin No. Definition
1 NDCD-
B_
2 NSIN
3 NSOUT
4 NDTR-
5 GND
Pin No. Definition
20
1 LCLK
2 GND
3 LFRAME
19
4 No Pin
5 LRESET
6 NC
7 LAD3
3
Pin No. Definition
6 USB DY+
7 GND
8 GND
9 No Pin
10 NC
Pin No. Definition
6 NDSR-
7 NRTS-
8 NCTS-
9 NRI-
10 No Pin
Pin No. Definition
8 LAD2
9 VCC3
S
10 LAD1
11 LAD0
12 GND
13 NC
14 NC
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B S S S
F_
B S S
1
S
Pin No. Definition
15 SB3V
1 2 3
16 SERIRQ
17 GND
18 NC
19 NC
20 SUSCLK
U
_S