19
Installing the Motherboard
F_USB1~3: Front Panel USB headers
The motherboard has eight USB ports installed on the rear edge I/O port array.
Additionally, some computer cases have USB ports at the front of the case. If you
have this kind of case, use auxiliary USB connector to connect the front-mounted
ports to the motherboard.
Please make sure that the USB cable has the same pin assignment as
indicated above. A different pin assignment may cause damage or system
hang-up.
1 USBPWR Front Panel USB Power
2 USBPWR Front Panel USB Power
3 USB_FP_P0- USB Port 0 Negative Signal
4 USB_FP_P1- USB Port 1 Negative Signal
5 USB_FP_P0+ USB Port 0 Positive Signal
6 USB_FP_P1+ USB Port 1 Positive Signal
7 GND Ground
8 GND Ground
9 Key No pin
10 USB_FP_OC0 USBOC-
Pin Signal Name Function
SPDIFO: SPDIF out header
This is an optional header that provides an SPDIFO (Sony/Philips Digital Interface)
output to digital multimedia device through optical fiber or coaxial connector.
1 +5V
2NC
3 SPDIFOUT
4 GND
Pin Signal Name
TCM/TPM: Trusted Cryptography Module/TPM module header
This header allows user to protect the PC from impermissible visit.
1 CK_P_33M_TPM 2 GND
3 FWH4 4 NC
5 PCIRST_L1 6 SMBDATA
7 PCIRST_L1 8 FWH2
Pin Signal Name
P
in Signal Name
9 VCC3 10 FWH1
11 FWH0 12 GND
13 NC 14 NC
15 3VSBY 16 SIRQ
17 GND 18 GND
17 LPCPD_L 20 SMBCLK
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