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Installing and Replacing Desktop Board Components
39
Connecting Internal Headers
Before connecting cables to the internal headers, observe the precautions in "Before You Begin" on
page 23. Figure 20 shows the location of the internal headers.
OM17705
1
3
USB A
USB B
Power (+5V)
Power (+5V)
D-
D+
Ground
Key (no pin)
N/C
D-
D+
Ground
5
6
7
8
3
4
2
10
1
Port1L
Port1R
Port2R
Sense_Send
Port2L
GND
Presence#
Sense1_Ret
Key (no pin)
Sense2_Ret
1
5
6
7
3
4
2
10
9
On/Off
Power LED
HD LED
Reset
No Connection
1
2
3
4
5
7
6
8
9
Ground
Ground
TPA2+
TPA2-
TPA1-
TPA1+
+12 V
+12 V
Ground
Key
(no pin)
1394a
1
5
6
7
3
4
2
8
10
A
C
F
1 2
B
D
E
Item Description
Item Description
A
Front panel audio
D
IEEE 1394a (two)
B
Chassis intrusion
E
Alternate power LED
C
Hi-Speed USB 2.0 (two)
F
Front panel
Figure 20. Internal Headers
Содержание D945PAW
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