Kontron COMe-cPV2(v1.0) - Manual (Page 56)

Kontron microETXexpress-PV User’s Guide
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6.3 Onboard Fan Connector
This section describes how to connect an optional fan to the connector
located directly on the microETXexpress®-PV-XT COM. With certain BIOS-
settings it is possible to control the fan depending on the active trip point
temperature. The fan switches on/off depending on the adjusted Active Trip
Point temperature. This feature requires an ACPI-compliant OS to function
properly. The fan PWM control is done on the GND pin rather than the positive
side. Please do not use pin 3 as a ground connection. See schematic below for
more details.
Figure 8: Fan Connector (J1) Location and Pin-Out
The onboard fan connector (J1) is on the right top side of the PCB.
Table 18: Fan Connector (J1) Pin-Out
Pin Description
1 Fan Tachometer
2 Power (VCC_12V)
3 Fan GND
(PWM controlled)
4 Power (5V)