Yes the problem is the large number of different strings USB card readers report as.
If you can, this will solve the problem Backup module usb-import.sh script (beta) - #25 by borpin
In your case it will need to read
usb=$(ls $disk_id | grep ‘usb-USB2’)
@TrystanLea @emrys with more people using this it needs to be fixed. I suggest a popup that allows the user to select the device to be used for import.