Installing and Replacing Desktop Board Components
41
Connecting Internal HeadersBefore connecting cables to the internal headers, observe the precautions in "Before You Begin" on
page 25. Figure 20 shows the location of the internal headers.
OM17641
1
3
USB A USB B
Power (+5V)
Power (+5V)
D-
D+
Ground
Key (no pin) N/C
D-
D+
Ground
56
78
34
2
10
1
Ground Ground
TPA2+ TPA2-
TPA1-
TPA1+
+12 V +12 V
Ground
Key
(no pin)
1394a
1
56
7
34
2
8
10
A
C
F
12
B
D
E
On/Off
Power LED
HD LED
Reset
No Connection
1
2
34
5
7
6
8
9
Port1L
Port1R
Port2R
Sense_Send
Port2L
GND
Presence#
Sense1_Ret
Key (no pin)
Sense2_Ret
1
56
7
34
2
10
9