On Sat, Sep 30, 2017 at 08:49:27PM +0330, Mostafa Shahverdy wrote:
I have an issue with the speed of my USB3 Trancend disk, while I am using my 
motherboard with USB2 ports (and also
some usb1 ports). It seems it is using usb1 driver for my usb disk, and
[...]
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/6p, 480M
   |__ Port 3: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 480M
   |__ Port 4: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 480M

It seems pretty clearly to be operating at USB 2 speed. Are there any error messages in your dmesg output? Can you quantify the performance?

Mike Stone

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