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Use extension USB cable for 3,5" external hard disks without problems?


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#1 Dirkk

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Posted 21 September 2014 - 08:04 AM

Can one extend the USB cables for USB 3,5" hard disks (e.g. WD MyBook, Seagate) without getting problems? Either with extension cables or with longer USB connections. What should be the max. length to extend? Or shouldn't extensions for hard disks not be used at all?


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#2 JohnC_21

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Posted 21 September 2014 - 08:36 AM

USB Cabling

 

For practical purposes, I wouldn't go past 10 feet. Are these USB 2.0 drives?



#3 Torvald

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Posted 22 September 2014 - 04:45 PM

Using an extension USB cord is not guaranteed to work, regardless of what length you use.

 

For example, I have a USB 2.0 Western Digital 500GB external harddrive that will only work if connected directly to a USB 2.0 port on my computer.

 

I have a 3-foot USB extension cord that all of my flashdrives will all work on, but my external harddrive simply won't work with it.  I even bought a special adapter where one end of my USB extension cord could plug into two USB connectors simultaneously (just in case my external harddrive needed the extra electrical power), but still no joy. 


Edited by Torvald, 22 September 2014 - 04:45 PM.

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#4 Dirkk

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Posted 22 September 2014 - 04:58 PM

Thank you, Torvald,

 

Strange, may be the 500 GB drive is a little bit old or / and the USB cord do not have the standard wire connections.

 

So obviously the best would be to only use the supplied cable and to each time place the hdd near the computer when needed, but that is not that convenient.

 

Many thanks again.


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#5 JohnC_21

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Posted 22 September 2014 - 05:15 PM

I have uses extension cables along with a USB IDE/SATA adapter on IDE drives without a problem but the cable was only 3 feet. And, these cables were labeled as USB 1.1



#6 Dirkk

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Posted 23 September 2014 - 03:04 AM

Thank you, JohnC_21. OK, not that long, but I assume it could be enough for me. Labeld as USB 1.1 and, I assume, fast as USB 2.0 at least


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#7 JohnC_21

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Posted 23 September 2014 - 07:46 AM

Sorry for the confusion. I posted that USB 1.1 worked for me but you should be using USB 2.0. For a cable to extend for a HDD I would recommend this.

 

Or, you could go cheap and see if it works for you.


Edited by JohnC_21, 23 September 2014 - 08:00 AM.


#8 OldPhil

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Posted 23 September 2014 - 06:40 PM

I routinely use a 4 foot extension cable for all my USB stuff, very convenient so far no issues, I have not tried any USB3 stuff yet.


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#9 Dirkk

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Posted 28 September 2014 - 03:06 PM

Sorry for misunderstanding, JohnC_21,

 

Alright, I understand, many thanks for the links.

 

 

I routinely use a 4 foot extension cable for all my USB stuff, very convenient so far no issues, I have not tried any USB3 stuff yet.

By the way, I assume, if there are issues, one hopefully will notice it. So, if I synchronize data and the extension would be too long / of poor quality e.g. the sync program will show a failure message.


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#10 JohnC_21

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Posted 28 September 2014 - 03:19 PM

You can check the files to see if they are identical using a crc or md5 check but I don't think WIndows verifies if the copied file is identical to the original. I would keep the cable as short as possible.



#11 Dirkk

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Posted 28 September 2014 - 03:34 PM

 

You can check the files to see if they are identical using a crc or md5 check but I don't think WIndows verifies if the copied file is identical to the original.

Yes, I would think so too, but I hope, if the data are not transferred correctly to the destination, there will be displayed a message.

 

Yes, as short as possible.

 

Thank you.


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#12 JohnC_21

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Posted 28 September 2014 - 03:47 PM

From what I have read Windows 7 is supposed to include the verify switch on a copy operation but it is still in doubt if it works. You can try Teracopy (freeware). This utility does do a CRC check on copy operations.

 

http://codesector.com/teracopy

 

teracopy_full.png



#13 Dirkk

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Posted 28 September 2014 - 04:26 PM

OK, thank you very much for the links, espacially the program.


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#14 rotor123

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Posted 29 September 2014 - 12:47 PM

Hi

FWIW I use 6 foot USB3 extension all the time. I use them on the computer and a media player. I use the ones on the computer to route the Back USB3 ports over to where I put external drives. I Use them with External USB3 Hard Drives of several different makes, Sizes and USB3 Flash drives too. I use them so I do not have to bend down and grope around on the back of the computer to change drives and to put the drives in a more convenient location.

 

I have a policy of only buying USB3 external storage and cabling for a while now. FWIW I also tend to use 2Tb Portable drives to save space and clutter and to avoid needing a external power adapter too. Anything that needs more space is sent to a NAS device.

 

Good Luck

Roger


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#15 Dirkk

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Posted 29 September 2014 - 05:29 PM

Hello Roger,

 

6 foot is very good. I do not want to replace the external drives, place them near the Notebook when I use them / plug them in, so some extensions labeled with the hdd name / letter to easily find the right plug immediately would be good.

 

I also would like to use 2,5" drives without power supply (plugging in an off does not make fun), but prices and capacities of 3,5" hdds are much more convenient.

 

Many thanks.


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