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Hi there. When talking about USB 3.0. Can say say that there is a USB 3.0 hard drive? Or can I say that if I have an external USB 3.0 hard drive case and place a hard drive in it it would have the USB

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USB 3 has the fastest data transfer speed through a computer with USB 3 port. If your computer does not support USB 3 then it cannot transfer data at USB 3 speeds.
If you install a hard drive into an USB 3 hard drive adapter case and the data transfer speed would depend how fast a hard drive you install in this USB 3 adapter case.
A SATA hard drive is faster than an IDE/PATA hard drive. Make sure you get the correct USB hard drive adapter case with the SATA or IDE/PATA connector that matches the hard drive.

Posted on Nov 03, 2012


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Posted on Jan 02, 2017

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With some external hard drives, the usb port doesn't carry enough power to run it properly, especially with thw newer externals. Does it give you an error message?

Posted on Jul 11, 2008

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SOURCE: USB drive problem

I had a client with this same issue. However, her issue was that the top left USB port would only accept flash drives. Your external harddrive is probably not getting enough power from your USB port. Try using two USB ports (you can get a connector for this) to power up the external harddrive.

Posted on Jul 08, 2009

  • 922 Answers

SOURCE: usb does not recognise external hard drive

Your drive is being recognized. However, your computer only has USB 1.1 so you are being notified that USB 2.0 is faster. This message is FYI and will not prevent you from accessing the drive.

After you see that message you should see your external drive in "My Computer" If you don't see the drive you probably need to assign an available drive letter to drive.

Open Windows Help and Support.
Search for "drive letters" and find "assigning drive letters"
This will walk you through the process.

If this helps, please vote for my solution.

Posted on Oct 05, 2009

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SOURCE: I purchased a Western Digital

I have the same problem with my laptop. Here is my understanding of the problem.

Many laptops have a BIOS limit of 128GB hard drive capacity.
Try to find the latest BIOS available for the laptop, and see if it supports 48-bit LBA addressing of the hard drive.
If the BIOS only supports 24-bit LBA addressing, there are tools to restrict the size of the drive.

DISCLAIMER: I have read of Dynamic Drive Overlay (or Drive Dynamic Overlay) software, which is supposed to allow for the use of larger drives. I have not used one, so I do not know how well they work. I am sure they slow down access and, from what I have read, they do not work with Vista or Windows 7.

Posted on Dec 11, 2009

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SOURCE: I have HITACHI hard drive model HTS541680J9SA00 i

Your HDD cannot start due to insufficient power. If you search for specs, you'll find out that your HDD needs 5W in start-up/peak - 1000mA at 5V. Your standard PC USB port will only supply 500mA, so you need to find an alternative power supply (if your enclosure came with such a thing), or better, find a 2xUSB cable , like this one (no publicity intended): . PS I know it's a rather old topic, but I recently faced the same problem and I hope this will help those in need.

Posted on Apr 28, 2010

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Plug the power, and make sure you have a USB 2.0 hi-speed port. Also check "computer management" and check the hard disk works.

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