Compaq Extension manual Thermal Control, Electrical characteristics

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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)

- 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

Copyright © COM Express™ Extension

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Specification Rev 013

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Contents COM Express Extension Specification This page intentionally left blank Table of Contents 2 PCI Copyright Notice User InformationAbout This Document Technical SupportCOM Express Extension Design Guide COM Express Extension SpecificationIntroduction COM Express Computer-On-ModuleCopyright COM Express Extension Specification Rev Objective COM Express Module sizes Overview Module SizeFigure Overview three module sizes Small Form Factor nano, COM Express TypeFigure Small Form Factor nano Signal Description Graphic Signal DescriptionTable Graphic Signal Description Row C for Pin- out Type Table Graphic Signal Description Row D for Pin- out Type Tmds Clock + Tmds Clock Wide Range Input Power for nano SmallFormFactor SFF Hardware extensionsGpio General Purpose I/O Recommended Use GPO0Alternative Gpio use for Sdio Interface Sdio Pin descriptionElectrical characteristics Thermal ControlSmart Battery Bios support Software extensionsTPM support Console redirection in Bios Legacy Super I/O support in BiosCmos backup in Bios User editor for default settingsBuses 1 ISA, Standard PS/2 ConnectorsApendix a PC Architecture Information General PC ArchitectureSerial ATA Ports1 RS-232 Serial 3 USBProgramming Appendix B DOCUMENT-REVISION History