Datasheet of CM4 Industrial V1.4

EDA Technology Co.,LTD

– Electronics Development Accelerator

CM4 Industrial has a fan control interface J67.

J67 pin is defined as follows:

Pin ID

Pin Name

1

5V（no pull up）

2

5V（with pull up）

3

FAN_EN

4

GND

5

GND

FAN_EN is connected to GPIO24 of CM4 through an N-channel MOS transistor, and the fan and speed

can be controlled by controlling GPIO24.

5 Wireless Communication

5.1 WiFi

CM4 Industrial supports 2.4G/5G dual-band WiFi.

2.4G band

Parameter

Feature

frequency range

802.11b/g/n(HT20): 2412-2472MHz

802.11n(HT40): 2422-2462MHz

modulation system

802.11b:DSSS

802.11g/n:OFDM

Frequency Step

5M

5G band

Parameter

Feature

frequency range

802.11a/n/ac:

5150-5350MHz

5470-5725MHz

5725-5850MHz

modulation system

BPSK

Frequency Step

5M

5.2 Bluetooth

CM4 Industrial supports Bluetooth 5.0.