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 Pin
1 +3.3 V dc 2
5 Ground 6
9 NC 10
13 Ground 14
17 Ground 18
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
Voltage Pin Voltage
+3.3 V dc 3 Ground
+5 V dc 7 Ground
+12 V dc 11 +3.3 V dc
NC 15 Ground
–5 V dc 19 +5 V dc
Name
Speaker output
—
—
—
Name
—
Fan connected
—
AlphaPC 164 Connector Pinouts
Pin Voltage
4 +5 V dc
8 P_DCOK
12 –12 V dc
16 Ground
20 +5 V dc
17