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How does one reconfigure their USB ports to SuperSpeed USB 3.0?

I didn't know this was a thing, but my ports are set to HiSpeed USB 2.0 and obviously a 2.0 device was the first USB device plugged into the ports when I got my new iMac last November.. so they're configured to 2.0 speed and not 3.0


Any way to reset them and start again?


Thanks!

iMac, OS X Mountain Lion (10.8.5)

Posted on Nov 1, 2013 6:47 AM

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Posted on Nov 1, 2013 7:43 AM

I'm not aware of any reconfiguring you would need to do. The port will automatically select the speed for the device that is plugged in.


Have you plugged in a USB 3 device with a USB 3 cable?


Note: If you have two or more devices plugged into the same USB port the type of the first device in the chain will determine if the port is 2 or 3. Always plug the USB 3 device first.


But this only applies to multiple devices. If you have only one device plugged in the port will be whatever that device is.


Message was edited by: Frank Caggiano

25 replies

Nov 5, 2013 8:15 AM in response to babowa

No he said he purchased it in November of 2012 The actual 2012's were released at the end of October so he didn't get a current model. He got one that was in the supply pipeline.


Now if hew was told up front that that is what he was getting fine. But if he thought he was getting an actual 2012 model and the store led him to believe this then it is definitely not right and he might have a valid case.


As I wrote a user in a similar situation thought was getting a just released Haswell MBP but it tuned out not to be. As with the OP here he got one that ws in the pipeline. Went back to the store and was given the correct system.


And from a purely technical point while FireWire will be an improvemnt over USB 2, USB 3 is faster then FireWire.


regards

Jul 2, 2014 5:07 PM in response to hughrodgers

Hi I have the same question, kindly see my post. I think one of my Port is configured to be only a USB 2. From what I read in this post, can you clear it out that plugging in the MBA 2013 a USB2 PORT on USB3 PORT doesn't affect it permanently? And plugging it in a HUB or PORT only affects it temporarily?


Any replies is appreciated, thanks!


Reconfigure USB 2 to USB 3 because USB 2 is plugged in first.

Jul 2, 2014 5:36 PM in response to franzzzzz

Nevermind, I read and tested some and found an answer. For those who has the same question, this may be a clear answer.


you can actually test if the device plugged-in is running as USB 3 or USB 2. Just plug the device and go to System Information from Spotlight or about mac->more info->system report->USB. If the device is running as USB 3 it should be under USB3 SuperSpeed Bus (which is a name for USB3) and if the device is running as USB 2 it will fall under USB 3 Hi-SpeedBus (name for USB2). Thats it. You may need to refresh the System Information if you opened it first before plugging the device.


Hope this helps! Correct me if I missed anything!

Jul 3, 2014 2:00 AM in response to hughrodgers

FWIW, I purchased a new 27" 3.2GHz this past week.

Directly connected into it I have a USB2 Super Multi Blue

Writer from LG (actually using 2 ports, an additional one

to get the power when burning BluRays) and a connection

to my UPS which is USB1.1 (based on the 1.5 megabit connection

speed).


When I plug in my Seagate USB3 portable HDD, running Blackmagic

Disk test on it, I get a transfer rate of ~100 Megabytes/sec which

translates to ~800 megabits/sec. This is obviously not USB2 speed

or USB1.1.


So, it seems the slowest device does not dictate the speed of all the

other devices, at least with the ports on the back of the new iMacs.


On external hubs, it may work differently.

Jul 3, 2014 4:24 AM in response to babowa

babowa wrote:


What about if the port is simply (older) USB 2? Only the newer Macs have USB 3 ports (my mid 2010 has USB 2).


I'm wondering if that was the question originally posed, then there is nothing that can be done as they are part of the logic board and anything USB 3 plugged in will be backwards compatible, but only run at USB 2 speed - is that correct?

My first thought.

Feb 14, 2015 6:36 PM in response to hughrodgers

I purchased a refurb this week, a late 2013 quad core model , so i to refer to the notes I found regarding the usb ports stating that the port will configure itself to the first type of USB connection attached.The specifically stipulate that ifs a USB 2 device is connected to any given (potentially permanent) USB 3 port then the software will permanently configure this port to function only as a USB 2 port !!!!!, and will remain USB 2 port from now on with a maximum output of 500ah. No matter if the usb 2 device is taken out and replace with a usb 3 device the port is still limited to usb 2 transfer speeds and 500ma output.


Has the board at APPLE been infiltrated by a covert comedian from the Comedy club who attends meets and suggest ridiculous ideas?


Was this idea drawn from a hat at an APPLE XMAS party.


The answer can only be known when we understand the reason dual core received its second encore. We know the FSB is on the CPU and the north bridge is gone but 4-6 cores would have been expected by the public.

Any way I took a USB 3 DATA STICK , and inserted it into each USB 3 port and will record the transfer speeds for each.


IF ANYTHING is slower I will wake it up with Apple ONLINE SUPPORT, and report the result to this page of the forum. You would be advised to do the same as although warned, this is unheard of, and unexpected. I am dyslexic and could have easily missed these notes, and devalued my iMac and reduced its power.


I HAVE 2 USB 2 DEVICES, SO MAYBE A USB 3 HUB IS BEST TO CONNECT EACH ONE SEPERATLY TO ENSURE ALL IMAC PORTS REMAIN USB 3.?


Thats how I understand it, any suggestions, or help ?


Does anyone know a simple fix, constructive criticism welcome.


Gran

How does one reconfigure their USB ports to SuperSpeed USB 3.0?

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