Input Power Connector Pinouts (J3); Enclosure Fan (+12 V Dc) Power Connector Pinouts (J2, J22); Speaker Connector Pinouts (J23); Microprocessor Fan Power Connector Pinouts (J21) - DEC AlphaPC 164 User Manual

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