Darrell1405

Q: Re-configure USB ports to v3.0?

I've read in this support article, Item #8 (Using USB 3 devices on Mac computers FAQ - Apple Support) that if a 2.0 USB device is plugged into the 3.0 ports in my iMac, they'll configure to the 2.0 speeds.

 

I am planning to purchase a 3.0 hub and wondered how to re-configure the ports back to their 3.0 capacity...or will the machine do this for me?

 

I appreciate, in advance, knowledgable inputs.

 

OS X Yosemite

Version 10.10.2

iMac (27-inch, Late 2012)

Processor   2.9 GHz Intel Core i5

Memory    8 GB 1600 MHz DDR3

iMac, OS X Yosemite (10.10.2)

Posted on Feb 6, 2015 8:33 PM

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Q: Re-configure USB ports to v3.0?

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  • by Niel,Helpful

    Niel Niel Feb 6, 2015 8:38 PM in response to Darrell1405
    Level 10 (312,988 points)
    Mac OS X
    Feb 6, 2015 8:38 PM in response to Darrell1405

    It'll happen automatically when an USB 3.0 device is plugged into them. That note refers to the first device in a mixed chain.

     

    (121827)

  • by woodmeister50,Helpful

    woodmeister50 woodmeister50 Feb 7, 2015 2:23 AM in response to Darrell1405
    Level 5 (5,547 points)
    Mac OS X
    Feb 7, 2015 2:23 AM in response to Darrell1405

    FWIW, I have a late 2013 27" iMac with USB3.0.

     

    I have the following devices plugged in:

        UPS monitor interface which is at USB 1.1

        An external DVD/CD/Bluray reader/burner with USB 2.0

        External HD enclosure with USB 3.0 interface

     

    The external drive runs at the full USB 3.0 speed (well as fast as a

    7200 RPM, 2.5" HDD drive can deliver data).  This is verified by

    running BlackMagic test on the external drive which delivers a read

    speed of 80 megabytes per second which translates to 640 megabits

    per second.  Theoretical max transfer speeds of USB 2.0 is 480 megabits.

  • by Darrell1405,

    Darrell1405 Darrell1405 Feb 7, 2015 1:09 PM in response to Niel
    Level 1 (9 points)
    Desktops
    Feb 7, 2015 1:09 PM in response to Niel

    That is a relief to read.  Thank you for taking time to leave a response.