ACEX4041 COM Express Type 10
AcroPack Carrier Board
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External Power Switch connector
P14, External Power Switch connector
The External Power Switch connector is a 4-pin conductor header. The External PWR Switch
connector is labeled P14 on the carrier. The External Power switch is used to connect the PWRBTN#
signal from the COM Express module to the outside world when the carrier is mounted in side an
enclosure. When this signal is brought to a logic low the system will turn on. Pin 3 of this
connector can be connected to an LED (Anode side) Current is limited thru a 330-ohm Resister
(R336) located near the connector. The resistor is a 0402 package. This connects to +3.3V. This
connector is a Molex 470531000 header.
Connector Pin Assignments
Pin Number
Signal Name
Pin Number
Signal Name
1
GND
2
GND
3
LED (ANODE)
4
PWRBTN#