User`s guide

Table 2–3 (Cont.) Module Connector Descriptions
Connector Pins Description
Power Connectors
J29 6 Module power connector (GND, –5 V, +5 V (Vdd))
(AlphaPC64.38)
J31 6 Module power connector (GND, +12 V, –12 V, +5 V
(Vdd), p_dcok)(AlphaPC64.38)
J28 6 Module power connector (+3.3 V, GND) (AlphaPC64.38)
J27 6 Module power connector (GND, +3.3 V) (AlphaPC64.38)
Note: Power for the AlphaPC64 is provided by a user-
supplied, standard PC power supply which includes
3.3 V dc. Digital does not provide this power supply.
J14 3 CPU fan power and sensor (AlphaPC64.38)
Caution: Fan sensor required
The fan must have a built-in sensor that drives a signal
if the airflow stops. The sensor is connected to J13. The
fan supplied with the AlphaPC64 includes an airflow
sensor.
J1 3 Enclosure fan connector (GND, +12 V, GND)
(AlphaPC64.38)
System Reset
J3 (Pins 28, 30) 2 System reset switch connector (AlphaPC64.4)
Speaker Connector
J3 (Pins 33, 35,
37, 39)
4 Speaker should be connected to pins 33, 35, 37, and 39.
(AlphaPC64.4)
2–10 System Jumpers and Connectors