Specifications

17 January 1997 – Subject to Change
System Configuration and Connectors 2–13
AlphaPC 164 Connector Pinouts
Note:
The Halt button is not used with the Windows NT operating system.
Table 2–15 Power LED Connector Pinouts (J27)
Pin Signal Name
1
POWER_LED_L
Pull-up to
+5V
2
GND
3NC
4NC
5NC
Table 2–16 IDE Drive LED Connector Pinouts (J28)
Pin Signal Name
1
HD_ACT_L
Hard drive active
2
HD_LED_L
Pull-up to
+5V
Table 2–17 Reset Button Connector Pinouts (J24)
Pin Signal Name
1
RESET_BUTTON
Reset system
2
GND
Table 2–18 Halt Button Connector Pinouts (J25)
Pin Signal Name
1
HALT_BUTTON
Halt system
2
GND