Technical product specification

Technical Reference

Figure 15. Connection Diagram for the Internal Power Supply Connector

2.2.4.3.1 Power Sensing Circuit

The board has a power sensing circuit that:

• manages CPU power usage to maintain system power consumption below 65 W

• is designed for use with 65 W AC-DC adapters

NOTE

It is recommended that you disable this feature (via BIOS option) when using an AC-DC

adapter greater than 65 W.

For information about

Refer to

Power supply considerations Section 2.5.1, page 66

2.2.4.4 Front Panel Header (2.0 mm Pitch)

This section describes the functions of the front panel header. Table 30 lists the signal names of

the front panel header. Figure 16 is a connection diagram for the front panel header.

Table 30. Front Panel Header (2.0 mm Pitch)

Pin Signal Name Description Pin Signal Name Description

1 HDD_POWER_LED Pull-up resistor (750 Ω)

to +5V

2 POWER_LED_MAIN [Out] Front panel LED (main

color)

3 HDD_LED# [Out] Hard disk activity

LED

4 POWER_LED_ALT [Out] Front panel LED (alt

color)

5 GROUND Ground 6 POWER_SWITCH# [In] Power switch

7 RESET_SWITCH# [In] Reset switch 8 GROUND Ground

9 +5V_DC Power 10 Key No pin