extending a built-in USB 3.0 cable

March 5, 2018 at 09:48:25
Specs: Mac OS X, .../lots...
I'm considering buying a new external cd/dvd burner; usb 3.0. Nowadays most come with a built-in (permanently attached) usb 3.0 cable - and it's rather short (typically abut 8ins at most).

The bulk of non built-in cable units are usb 2.0; and the one or two that are usb 3.0 (non built-in cable) seem to be not too well reviewed (at least on the big jungle site...).

There are usb 3.0 extension cable about (decent makes/brands); typically 0.5metre, 1.0metre, 2.0metre in length.Would an external burner be Ok with a 0.5 - even 1.0metre extension cable added onto the built-in 8ins (0.2metre) cable?

Anyone tried this and found the burner to function OK?

Tak as always for input and advice...


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March 5, 2018 at 11:57:52
Look here:

USB is good for greater distances without loss than what you are thinking about.
Note also the 'bulb' type extensions that sit on your desk so you always have it handy to plug into without bending down or looking for the plug laying around.

You have to be a little bit crazy to keep you from going insane.

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March 5, 2018 at 13:45:02
Hi fingers. Tak for info.

I’m aware of the length usb cables can go re’ data. I was more thinking about the 5volts power feed and a possible drop in that when the long(er) cable is used to send/receive data and also power the cd/dvd burner.

Would that be an issue if extending the built-in 0.2metre cable on the burner by 0.5metre or more?

Incidentally the newegg site now has a UK site (and others); and - a rare find when buying stuff that has one price in US which miraculously converts to a higher equivalent price in other currencies - the UK prices seem to mirror the US... (more or less).

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March 5, 2018 at 20:51:11
It should not matter for that length, now 16-20ft (5-6m) and that would be different. If you are still not sure or have actual trouble then maybe get a powered hub for the desktop and use that (though maybe not as bootable if necessary).

You have to be a little bit crazy to keep you from going insane.

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March 7, 2018 at 07:08:37
An update of sorts...

More for the benefit of anyone who may come across this thread via Google or wherever/whenever...

Tested a new usb 3.0 dvd//cd burner ( from Amazon) with a 1metre extension cord attached to the built-in "very short" ( less than a foot) cable.

Seems OK - as long as I plug directly into the back of my Mac Mini rather than into a usb hub (D-link DUB-H7) which is usb 2.0. Seemed to struggle in the DUb-H7. Mac Mini (late 2012) is usb3.0 ports and it's tres happy there...

Certainly didn't like being plugged into a standard usb 2.0 extension cable - wouldn't work at all via the hub or the Mac Mini...

Fortunately I did (do) have a 1metre usb3.0 extension "in stock/in house" so could do the tests as above. Now will install my D-link usb3.0 hub (been sitting waiting patiently for an age to be brought into use) as my main hub and use the usb2.0 for items that are usb2.0 - I have a mix of stuff...

I will be using a shorter (.3metre) extension cable rather than the 1metre once it arrives; in the mail as I speak/write... Cables are best kept shorter than longer overall whenever possible/practical...

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