Datasheet

Installing and Replacing Desktop Board Components
43
Connecting Internal Headers
Before connecting cables to the internal headers, observe the precautions in "Before You Begin" on
page 25.
OM16934
D
B
C
1
5
6
7
3
4
2
10
9
Port1L
Port1R
Port2R
Sense_Send
Port2L
GND
Presence#
Sense1_Ret
Key (no pin)
Sense2_Ret
1
3
On/Off
Power LED
HD LED
Reset
No Connection
1
2
3
4
5
7
6
8
9
USB A
USB B
1
5
6
7
8
3
4
2
10
Power (+5V)
Power (+5V)
D-
D+
Ground
Key (no pin)
N/C
D-
D+
Ground
E
A
1
F
1
5
6
7
8
3
4
2
10
TPA1+
Ground
Key (no pin)
Ground
TPA1-
TPA2+
TPA2-
+12 V
+12 V
Ground
Item Description
A Chassis intrusion
B Alternate power LED
C Front panel
D USB 2.0
E IEEE 1394
F Front panel audio
Figure 21. Internal Headers