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5109C KEYBOARD USER'S GUIDE 

Product Overview 

This document describes the functional specification of standard 

USB 

keyboard and standard 

USB 

Hub

 keyboard. Its function is fully compatible with the 

U

niversal 

S

erial 

B

us Specification Revision 

1.1 as well as the 

H

uman 

I

nterface 

D

evices (HID) class specification 1.1. 

USB Interface Features: 

Ø 

USB is a "must-have" feature in the current market. 

Ø 

The instant way to expand your PC. You never to open your PC and you don't need to worry 
about add-in cards, DIP switch setting or IRQs. 

Ø 

"Hot-swapping" feature: You don't even need to shut down and restart your PC to attach or 
remove a peripheral. Just plug it in and go! 

The ACPI Power Management Keys and Their Functions 

System requirement:  

Ø 

Microsoft

 Windows

 98 operating system. 

Ø 

The system supporting ACPI or APMII. 

Ø 

ATX motherboard and ATX power supply. 

The functions of the power management are specified and performed by Windows

 98 operating 

system, no vendor-specified driver is needed to use them, but the Windows

 98 operating system is 

necessary. There could be one or two or three ACPI power management keys on the keyboard, those 
functions are as follows. 

Power off

 key: 

Power down the system. 

 

Sleep

 key: 

Put the system to sleep.  

Wake up

 key: 

Wake up or powers up the system.  

Power

 key: 

(Single key with three functions above) 

 

  

Ø 

Press this key and hold over four seconds to power down the system. 

Ø 

Press this key and release it within four seconds to put the system to sleep. 

Ø 

When the system is asleep or powered down, press this key and release it within four 
seconds to wake up or power up the system. 

USB Cable, Plug Contact Numbering & Ports 

USB keyboard has a cable for sub-channel device and a series A plug, which fully comply with the 

USB

 specification 1.1. 

 

Contact 

Numbe r 

Signal Name   Comment 

VCC 

Cable power 

- Data 

 

+ Data 

 

 

 

Ground 

Cable ground 

U

U

S

S

B

B

 

 

p

p

l

l

u

u

g

g

 

 

U

U

S

S

B

B

 

 

d

d

o

o

w

w

n

n

s

s

t

t

r

r

e

e

a

a

m

m

 

 

p

p

o

o

r

r

t

t

s

s

 

 

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