
5149UKEYBOARDUSER'SGUIDE
ProductOverview
Thisdocument describesthefunctional specificationofstandard USB keyboardand standard USB
Hub keyboard. Itsfunctionisfullycompatiblewiththe Universal Serial BusSpecification
Revision1.1aswell asthe Human Interface Devices(HID)class specification1.1.
USBInterface Features:
ØUSBisa"must-have"featureinthecurrent market.
ØTheinstant waytoexpand yourPC. YounevertoopenyourPCand youdon't needtoworry
about add-incards, DIPswitchsettingorIRQs.
Ø"Hot-swapping"feature:Youdon't evenneedtoshut downand restart yourPCtoattachor
removeaperipheral. Just plugit inand go!
TheACPI Power ManagementKeys and TheirFunctions
Systemrequirement:
ØMicrosoftÒWindowsÒ98 operating system.
ØThesystem supporting ACPIorAPMII.
ØATXmotherboardand ATXpowersupply.
Thefunctionsofthepowermanagement arespecifiedand performedbyWindowsÒ98 operating
system, novendor-specifieddriverisneededtousethem, but theWindowsÒ98 operatingsystem
isnecessary. Therecouldbeoneortwoorthree ACPIpowermanagement keysonthekeyboard,
thosefunctionsareasfollows.
Power off key: Powerdownthesystem.
Sleep key: Put thesystemtosleep.
Wakeup key: Wakeup orpowersup thesystem.
Power key: (Singlekeywiththree functionsabove)
ØPress thiskeyand holdoverfoursecondstopowerdownthesystem.
ØPress thiskeyand releaseit withinfoursecondstoput thesystemtosleep.
ØWhenthesystemisasleeporpowereddown, press thiskeyand releaseit withinfour
secondstowakeup orpowerup thesystem.
USBCable, Plug ContactNumbering &Ports
USBkeyboardhasacableforsub-channel deviceand aseriesAplug, whichfullycomplywiththe
USB specification1.1.
Contact
Number
Signal Name Comment
1VCC Cablepower
2-Data
3+Data
4Ground Cableground
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