Intel D955XCS Product Guide - Page 43

USB 2.0 Headers, Front Panel Header, Alternate Power LED Header

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Installing and Replacing Desktop Board Components USB 2.0 Headers See Figure 22, F for the location of the black USB 2.0 headers. Table 8 shows the pin assignments for the headers. Table 8. USB 2.0 Header Signal Names USB Port A Pin Signal Name 1 Power 3 D- 5 D+ 7 Ground 9 Key Note: USB ports may be assigned as needed. USB Port B Pin Signal Name 2 Power 4 D- 6 D+ 8 Ground 10 No connect Front Panel Header Figure 22, E on page 41 shows the location of the multi-colored front panel header. Table 9 shows the pin assignments for the front panel header. Table 9. Front Panel Header Signal Names Pin Signal In/Out Description Pin Signal In/Out Description Hard Drive Activity LED (Yellow) Power LED (Green) 1 HD_PWR Out Hard disk LED pull- 2 HDR_BLNK_GRN Out Front panel green up (330 Ω) to +5 V LED 3 HDA# Out Hard disk active LED 4 HDR_BLNK_YEL Out Front panel yellow LED Reset Switch (Purple) On/Off Switch (Red) 5 Ground 7 FP_RESET# In Ground Reset switch 6 SWITCH_ON# In 8 Ground Power switch Ground 9 +5 V Reserved. Do not use. 10 No pin Alternate Power LED Header Figure 22, C on page 41 shows the location of the alternate power LED header. If you have a threepin power LED cable, connect it to this header. 43

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Installing and Replacing Desktop Board Components
43
USB 2.0 Headers
See Figure 22, F for the location of the black USB 2.0 headers.
Table 8 shows the pin assignments
for the headers.
Table 8.
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.
Front Panel Header
Figure 22, E on page 41 shows the location of the multi-colored front panel header.
Table 9 shows
the pin assignments for the front panel header.
Table 9.
Front Panel Header Signal Names
Pin Signal
In/Out
Description
Pin
Signal
In/Out
Description
Hard Drive Activity LED (Yellow)
Power LED (Green)
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 (Purple)
On/Off Switch (Red)
5
Ground
Ground
6
SWITCH_ON#
In
Power switch
7
FP_RESET#
In
Reset switch
8
Ground
Ground
9
+5 V
Reserved. Do not use.
10
No pin
Alternate Power LED Header
Figure 22, C on page 41 shows the location of the alternate power LED header.
If you have a three-
pin power LED cable, connect it to this header.