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.
OM18108
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
Ground
Ground
TPA2+
TPA2-
TPA1-
TPA1+
+12 V
+12 V
Ground
Key
(no pin)
1394a
1
5
6
7
3
4
2
8
10
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
1
3
F
E
1 2
A
B
C
D
Item Description
A
Front panel audio
B
IEEE 1394a (two)
C Chassis
intrusion
D
Alternate power LED
E Front
panel
F
Hi-speed USB 2.0 (two)
Figure 20. Internal Headers
Содержание D945GPM
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