English Product Guide

Installing and Replacing Desktop Board Components

Front Panel Audio Header

Figure 23, C shows the location of the front panel audio header. Table 6 shows the pin

assignments and signal names for the front panel audio header.

Table 6. Front Panel Audio Header Signal Names

Pin Signal Name Pin Signal Name

1 PORT 1L 2 GND

3 PORT 1R 4 PRESENCE#

5 PORT 2R 6 SENSE1_RETURN

7 SENSE_SEND 8 KEY (no pin)

9 PORT 2L 10 SENSE2_RETURN

IEEE 1394a Header

Figure 23, D shows the location of the IEEE 1394a header. Table 7 shows the pin

assignments and signal names for the IEEE 1394a header.

Table 7. 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

Front Panel Header

Figure 23, E shows the location of the front panel header. Table 8 shows the pin

assignments and signal names for the front panel header.

Table 8. Front Panel Header Signal Names

Pin Description In/Out

Hard Drive Activity LED Power LED

1 Hard disk LED pull-up to +5 V

Out 2 Front panel green LED Out

3 Hard disk active LED Out 4 Front panel yellow LED Out

Reset Switch On/Off Switch

5 Ground 6 Power switch In

7 Reset switch In 8 Ground

Power Not Connected

9 Power Out 10 No pin