This will explain how to check if the computer can see the upload cable. This only applies to the windows operating system.
If your Magtouch Uploader is not found check the cable first before sending the unit in for repairs. It is a standard USB A-B cable which is normally used with printers.
If you Magtouch Uploader is found here but not in the Magtouch software, this could indicate that the uploader is faulty and would need to be brought in for a service.
There is a possibility other drivers are interfering with your uploader as well. If the cable is found without the cable being plugged in another driver is definitely interfering.
If the port does not change in the Magtouch software you can press Shift 3 which will show a port selection. Select a higher port number and the computer should be able to find the cable. If it keeps getting stuck repeat the process.