Installing and Replacing Desktop Board Components
31
Connecting Hi-Speed USB 2.0 Headers
Before connecting the USB 2.0 headers, observe the precautions in "Before You Begin"
on page
21. See Figure 10, B on page 29 for the location of the USB 2.0 headers.
Table 5 shows the pin assignments for the headers.
Table 5. Hi-Speed 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.
Connecting the Front Panel Header
Before connecting the front panel header, observe the precautions in "Before You
Begin" on page
21. See Figure 10, C on page 29 for the location of the multi-colored
front panel header.
Table 6 shows the pin assignments for the front panel header.
Table 6. Front Panel Header Signal Names
Pin Signal In/Out Description Pin
Signal In/Out Description
Hard Drive Activity LED Power LED
1 HD_PWR Out
Hard disk LED pull-
up (330 Ω) to +5 V
2 HDR_BLNK_GRN Out
Front panel
green LED
3 HDA# Out
Hard disk active
LED
4 HDR_BLNK_YEL Out
Front panel
yellow LED
Reset Switch On/Off Switch
5 Ground Ground 6 SWITCH_ON# In Power switch
7 FP_RESET# In Reset switch 8 Ground Ground
Power Not Connected
9 +5 V Power 10 N/C No pin
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