Compaq Extension manual Thermal Control, Electrical characteristics

5 Hardware extensions

5.3Thermal 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)

Electrical characteristics:

-Vcc = 5 V

-Imax (continuous) = 0,68 A

-Imax (pulsed) = 2 A

-Sense (Tacho-pulse) = 4 Pulses per turn

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Specification Rev 013