bought my marshall code 50 last nov 2, 2017 . When i connecy my Code50 to my computer , says USB on Code50 but nothing happens in my computer . not detecting or any. cannot find it on Device Manager . my usb mini cable is new btw.
Try another USB cable. Some of them had only power function. I had the same problem. Replacing of USB cable fixes all problems.
If any other device is working with this cable and USB port, your CODE USB port may be faulty