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About the 4-Port USB Hub 

The 4-Port USB Hub allows users to connect up 
to four USB peripherals to their USB ready PC 
or Mac. 
The 4-port USB Hub is designed to provide 
quicker and easier access to four type “A” 
downstream ports for connecting peripherals 
with USB support, USB hubs and other devices. 
A single type “B” upstream port is provided for 
connecting to the host computer, or another USB 
hub. 

Product Features 

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USB 1.1 specification compatibility 

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Plug-and-Play 

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Supports both OHCI and UHCI. 

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Supports Self-power mode. 

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Supports Bus-power mode. 

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Supports 1 upstream and four downstream 
USB ports 

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One LED indicator for Self-power mode 

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One LED indicator for Bus-power mode 

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One LED indicator for each downstream 
port status 

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Connects up to 127 USB devices with 
cascading hub. 

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Over-current and high-inrush current 
protections 

Summary of Contents for DU-H4

Page 1: ...DU H4 4 port USB Hub User s Manual Rev 01 Oct 2000 Printed In China ...

Page 2: ...acturers within the computer industry to define a new type of peripheral connection scheme It is designed to replace older parallel and serial ports cables and connectors with something faster and easier to use USB is Easier Windows 98 2000 Me or MAC OS will automatically recognize newly installed devices Quicker You won t have to reboot when installing Faster Top USB data speed is around 100 time...

Page 3: ... type B upstream port is provided for connecting to the host computer or another USB hub Product Features USB 1 1 specification compatibility Plug and Play Supports both OHCI and UHCI Supports Self power mode Supports Bus power mode Supports 1 upstream and four downstream USB ports One LED indicator for Self power mode One LED indicator for Bus power mode One LED indicator for each downstream port...

Page 4: ...4 INSTALLATION The 4 Port USB Hub is designed to be simple and easy to install Application Diagram ...

Page 5: ...e Hub LED Indicators The 4 Port USB Hub is equipped with LED indicators Self Power LED Indicator This indicator lights red when the USB Hub is receiving power from external power source otherwise it is off Bus Power LED Indicator This indicator lights green when the USB Hub is receiving power from USB bus otherwise it is off Port status LED Per port has one status LED When the LED lights on means ...

Page 6: ...6 USB Connector Pin Assignment Receptacle A Series A Plug Receptacle B Series B Plug ...

Page 7: ...1 5Mbps High 12Mbps LED indicators 4 Port Power x 2 Port status x 4 Upstream port Series B Receptacle x 1 Downstream port 4 Port Series A Receptacle x 4 Output Voltage Per port DC 5V Output Current 4 Port Per port 500mA External Power power adapter Dimensions 67mm x 125mm x 23mm ...

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