
Installing and Replacing Desktop Board Components
41
Alternate Front Panel Power LED Header
Figure 18, E on page 38 shows the location of the alternate front panel power LED
header. Pins 1 and 3 of this header duplicate the signals on pins 2 and 4 of the front
panel header. If your chassis has a three-pin power LED cable, connect it to this
header.
Table 11 shows the pin assignments for the alternate front panel power LED header.
Table 11. Alternate Front Panel Power LED Header Signal Names
Pin Description
In/Out
1
Front panel green LED
Out
2 No
pin
3
Front panel yellow LED
Out
Front Panel Header
Before connecting to the front panel header, observe the precautions in "Before You
Begin" on page 24. See Figure 18, F on page 38 for the location of the multi-colored
front panel header.
Table 12 shows the pin assignments for the front panel header.
Table 12. 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
Содержание DG41AN
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