Intel D975XBX2KR Product Guide - Page 45

Front Panel Header, Alternate Front Panel Power LED Header, IEEE 1394a Header

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Installing and Replacing Desktop Board Components Front Panel Header Figure 24, A on page 44 shows the location of the multi-colored front panel header. Table 5 shows the pin assignments for the front panel header. Table 5. Front Panel Header Signal Names Pin Description In/Out Pin Description Hard Drive Activity LED Power LED 1 Hard disk LED pull-up to +5 V Out 2 Front panel green LED 3 Hard disk active LED Out 4 Front panel yellow LED Reset Switch On/Off Switch 5 Ground 6 Power switch 7 Reset switch In 8 Ground Power Not Connected 9 Power Out 10 No pin In/Out Out Out In Alternate Front Panel Power LED Header Figure 24, B on page 44 shows the location of the alternate front panel power LED header. If you have a three-pin power LED cable, connect it to this header. IEEE 1394a Header See Figure 24, 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 1 TPA1+ Pin Signal Name 2 TPA1- 3 Ground 4 Ground 5 TPA2+ 7 +12 V 9 Key (no pin) 6 TPA28 +12 V 10 Ground 45

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Installing and Replacing Desktop Board Components
45
Front Panel Header
Figure 24, A on page 44 shows the location of the multi-colored front panel header.
Table 5 shows the pin assignments for the front panel header.
Table 5. Front Panel Header Signal Names
Pin
Description
In/Out 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
Alternate Front Panel Power LED Header
Figure 24, B on page 44 shows the location of the alternate front panel power LED
header.
If you have a three-pin power LED cable, connect it to this header.
IEEE 1394a Header
See Figure 24, 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