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iMac mid 2011 27 inch - External SSD USB extremely slow

Hi All


I have recently upgraded the internal drive to SSD and that works like a charm read and write speed around 450mb but I have also bought a external SDD and unfortunately that is extremely slow please see attached the max read and write speed it gives via USB, does anyone else have similar issues?


BTW I have tried the external SSD on a 2015 macbook pro and gets around 400mb speed to that rule out the possibility that drive is faulty.


Thanks in advance

iMac 27″, macOS 10.13

Posted on Nov 21, 2020 2:25 PM

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Question marked as Top-ranking reply

Posted on Nov 21, 2020 2:53 PM

The 2011 iMac has USB 2 ports and the 2015 MBP has USB 3 ports. There's a big speed difference between the two.


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iMac mid 2011 27 inch - External SSD USB extremely slow

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