Specifications

2–12 System Configuration and Connectors
Subject to Change – 17 January 1997
AlphaPC 164 Connector Pinouts
Table 2–11 Input Power Connector Pinouts (J3)
Pin Voltage Pin Voltage Pin Voltage Pin Voltage
1 +3.3 V dc 2 +3.3 V dc 3 Ground 4 +5 V dc
5 Ground 6 +5 V dc 7 Ground 8 P_DCOK
9 NC 10 +12 V dc 11 +3.3 V dc 12 –12 V dc
13 Ground 14 NC 15 Ground 16 Ground
17 Ground 18 –5 V dc 19 +5 V dc 20 +5 V dc
Table 2–12 Enclosure Fan (+12 V dc) Power Connector Pinouts (J2, J22)
Pin Voltage
1 Ground
2 +12 V dc
3 Ground
Table 2–13 Speaker Connector Pinouts (J23)
Pin Signal Name
1 SPKR Speaker output
2 GND —
3 GND —
4 GND —
Table 2–14 Microprocessor Fan Power Connector Pinouts (J21)
Pin Signal Name
1 +12V —
2 FAN_CONN_L Fan connected
3 GND —