Compaq 164SX user manual Microprocessor Fan Power Connector Pinouts, Soft Power Connector Pinouts

Microprocessor Fan Power Connector Pinouts

4.12 Microprocessor Fan Power Connector Pinouts

Table 4–12shows the microprocessor fan power connector pinouts.

Table 4–12 Microprocessor Fan Power Connector Pinouts (J14)

Pin	Signal	Description
1	+12 V dc	—
2	FAN_CONN_L	Fan connected
3	Gnd	—

4.13 Soft Power Connector Pinouts

Table 4–13shows the soft power connector pinouts.

Table 4–13 Soft Power Connector Pinouts (J1)

Pin	Signal	Description
1	Input	System power on/off
2	Gnd	—

4.14 Multipurpose Connector Pinouts

J20 is a multipurpose connector that provides pins for the following functions:

•System speaker

•LEDs for power and the EIDE drive

•Buttons for reset and halt

Table 4–14shows the multipurpose connector pinouts, and Figure 4–1shows the connector layout.

Table 4–14 Multipurpose Connector Pinouts (J20)			(Sheet 1 of 2)
Pin	Signal	Description
1	Gnd	—
2	HALT_BUTTON	Halt system
3	Gnd	—
4	RESET_BUTTON	Reset system

AlphaPC 164SX Connector Pinouts 4–9