Compaq COM Express Extension - Manual (Page 18)

5 Hardware extensions
Copyright © COM Express™ Extension
Specification Rev 013
18
5.3 Thermal Control
A three-pin fan header is stuffed onboard the module to support thermal control through the use of a
fan. Through 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. In
order for this feature to function properly, an ACPI compliant OS is necessary. (Except for
nanoETXexpress modules)
- Part number (Molex): 53261-0390
- Mates with: 51021-0300
- Crimp terminals: 50079-8100
Electrical characteristics:
- Vcc = 5 V
- Imax (continuous) = 0,68 A
- Imax (pulsed) = 2 A
- Sense (Tacho-pulse) = 4 Pulses per turn