Intel BLKD946GZABL Datasheet download pdf (Page 53)

Technical Reference

2.7.2.3 Front Panel Header

This section describes the functions of the front panel header. Table 24 lists the signal

names of the front panel header.

Figure 15 is a connection diagram for the front panel

header.

Table 24. Front Panel Header

Signal

In/

Out

Description

Signal

In/

Out

Description

Hard Drive Activity LED Power LED

1 HD_PWR Out Hard disk LED

pull-up 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 FPBUT_IN In Power switch

7 FP_RESET# In Reset switch 8 Ground Ground

Power Not Connected

9 +5 V Power 10 N/C Not connected

OM18331

Hard Drive

Activity LED

Reset

Switch

+5 V DC

N/C

Power

Switch

Dual-

colored

Power LED

Single-

colored

Power LED

Figure 15. Connection Diagram for Front Panel Header

2.7.2.3.1 Hard Drive Activity LED Header

Pins 1 and 3 can be connected to an LED to provide a visual indicator that data is

being read from or written to a hard drive. Proper LED function requires one of the

following:

• A Serial ATA hard drive connected to an onboard Serial ATA connector

• A Parallel ATA IDE hard drive connected to an onboard Parallel ATA IDE connector

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Intel BLKD946GZABL Datasheet Page 53

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