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Installing and Replacing Desktop Board Components
41
Front Panel Audio Header
Figure 22, A on page 40 shows the location of the yellow front panel audio header. Table 5 shows
the pin assignments for the front panel audio header.
Table 5. Front Panel Audio Header Signal Names
Pin Signal Name Pin Signal Name
1 Port1L 2 GND
3 Port1R 4 Presence#
5 Port2R 6 Sense1 Ret
7 Sense Send 8 Key (no pin)
9 Port2L 10 Sense2 Ret
IEEE 1394a Header
See Figure 22, C for the location of the blue IEEE 1394a header. Table 6 shows the pin
assignments for the header.
Table 6. IEEE 1394a Header Signal Names
Pin Signal Name Pin Signal Name
1 TPA1+ 2 TPA1-
3 Ground 4 Ground
5 TPA2+ 6 TPA2-
7 +12 V 8 +12 V
9 Key (no pin) 10 Ground
USB 2.0 Headers
See Figure 22, B for the location of the black USB 2.0 headers. Table 7 shows the pin assignments
for the headers.
Table 7. USB 2.0 Header Signal Names
USB Port A USB Port B
Pin Signal Name Pin Signal Name
1 Power 2 Power
3 D- 4 D-
5 D+ 6 D+
7 Ground 8 Ground
9 Key 10 No connect
Note: USB ports may be assigned as needed.