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15
J139: Front Panel Header
NMI
18
17
SMBUS Clock
GND
16
15
SMBUS Data
_
14
13
5VSB
Warning LED -
12
11
Reserved
Warning LED +
10
9
5V
GND
8
7
Reset
PWR SW
6
5
GND
PWR LED-
4
3
HDD LED-
PWR LED+
2
1
HDD LED+
The motherboard
provides one front panel
header for electrical
connection to the front
panel switches and
LED’s.
J25: USB Front Panel Header
1
2
9
10
Use this header to connect to front panel USB
connector.
Signal Pin
Pin Signal
USBPWR 1 2 USBPWR
USB3- 3 4 USB2-
USB3+ 5 6 USB2+
GND 7
8 GND
KEY 9
10 GND
J146: COM2 Header
1
2
9
10
Use these pin definitions to connect a port to COM2.
Signal Pin
Pin Signal
Data Carrier Detect
1
2
Data-set-ready
Receive-data 3
4
Request-to-send
Transfer-data 5
6 Clear-to-send
Data-terminal-ready 7 8 Ring-indicator
GND 9
10
NC/Key
