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4 pin and 5 pin USB, as well as portable hard drive queries

Discussion in 'Hardware' started by jimmy_saville, Jan 11, 2008.

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  1. jimmy_saville

    jimmy_saville Thread Starter

    Joined:
    Aug 28, 2007
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    Iv recently purchased a Western Digital 120GB Portable Hard Drive USB2.0 5400rpm 2MB Cache Retail Passport Drive it comes with a 8" long Hi-Speed USB to mini-USB Type B. Considering the length of the cable and that I'm using it with a desktop and not a laptop i thought i would buy a USB extension cable to make life easier. I purchased a Belkin Pro Series USB Extension Cable 1.8m which has a 4 PIN USB Type A - male to a 4 PIN USB Type A - female. The USB extension was plugged into a USB2 port on the PC and then the i plugged the portable hard drive into that alas i got nothing from it. I know that the portable hard drive sources its power from the usb port and tried it without the USB extension cable and it worked fine.

    My question is why?

    Do i need a 5 pin usb type A to a 5 pin usb type B extension cable or simple i can't use an extension cable with it?

    What is the difference between a 4pin and a 5pin, is it something to do with devices sourcing their power from the usb port?

    also one more thing has any one had any dealings with these USB cables that use two usb ports to produce double the power

    http://www.amazon.com/USB-Power-Adapter-Y-Cable/dp/B000JIOHDE

    Cheers in advance guys.
     
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