Check USB Port Speed from Linux Server

 

#Check USB Port Speed from Linux Server: 

 cat /sys/bus/usb/devices/usbX/speed

Here X will be 1 or 2 or 3 , usb1 or usb2 or usb3 

if  give you the bus speed of the root hub(s) in Mbps: 

either 1.5, 12, indicate USB1 (low speed or full speed)

either 480, indicate USB2

either 5000 or 10000, indicate USB3

#Create specific size file and check read write speed in linux

dd if=/dev/zero of=test bs=1G count=1

this will carete a 1Gb file name will be test