12 speaker connector pinouts, Table 4–12 speaker connector pinouts (j20), 13 microprocessor fan power connector pinouts – Compaq AlphaPC 164LX User Manual
Page 31: 14 power led connector pinouts, Table 4–14 power led connector pinouts (j24), Speaker connector pinouts, Microprocessor fan power connector pinouts, Power led connector pinouts, Speaker connector pinouts (j20), Microprocessor fan power connector pinouts (j18)

AlphaPC 164LX Connector Pinouts
4–9
Speaker Connector Pinouts
4.12 Speaker Connector Pinouts
Table 4–12 shows the speaker connector pinouts.
4.13 Microprocessor Fan Power Connector Pinouts
Table 4–13 shows the microprocessor fan power connector pinouts.
Table 4–12 Speaker Connector Pinouts (J20)
Pin
Signal
Name
1
SPKR
Speaker output
2
Gnd
—
3
Gnd
—
4
Gnd
—
Table 4–13 Microprocessor Fan Power Connector Pinouts (J18)
Pin
Signal
Name
1
+12 V dc
—
2
FAN_CONN_L
Fan connected
3
Gnd
—
4.14 Power LED Connector Pinouts
Table 4–14 shows the power LED connector pinouts.
Table 4–14 Power LED Connector Pinouts (J24)
Pin
Signal
Name
1
POWER_LED_L
Power LED input
2
Gnd
—
3
NC
—
4
NC
—
5
NC
—