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DU-H4 
4-port USB Hub 
User’s Manual 
 
 
 
 
 
   Rev. 01 (Oct. 2000) 
 
Printed In China                                                                                                                                                                                                                                                                                                                                                                                                                  
                    
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                        INTRODUCTION  Thanks for purchasing the D-Link 4-Port USB  Hub. This easy plug and play external device  will allow your computer to connect to USB  interfaced monitors, printers, digital speakers,  modems, digital cameras, joysticks and other  USB devices.  Technology Overview  USB stands for Universal Serial Bus. It’s a  standard that has been adopted by leading  manufacturers within the computer industry to  define a new type of peripheral connection  scheme. It is designed to replace older p
                    
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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  ?? USB 1.1 specification compatibility  ?? Plug-and-Play  ?? Supports 
                    
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                        INSTALLATION  The 4-Port USB Hub is designed to be simple  and easy to install.  Application Diagram                                4                                                                                                                                                                                                                                                                                                                                                                               
                    
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                        Hardware Installation  1. Plug the included adapter into the rear of  the 4-Port USB Hub and an available  electrical outlet.  2. Plug the B-type connector into the  “Upstream Port”.  3. Plug the A -type connector into a computer  or USB Hub downstream port.  4. Connect USB devices to the 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 i
                    
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                        USB Connector Pin Assignment      Receptacle A Series-A Plug      Receptacle B Series-B Plug              6                                                                                                                                                                                                                                                                                                                                                                                                         
                    
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                        SPECIFICATIONS  Standards: USB Specification V.1.x compatibly  Data Speed: Low: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    7