Hi All, i bought an Ender3 V3 ke a couple of weeks back (NEW). The problem im having is the small screen on the right side of the printer im having trouble with the usb ports. Each time i place a usb drive in it wont always download the project. I have used the usb that came with the printer and a brand new one which also does the same. Do you think the usb ports are a bit duff. Cheers Ken
I don’t think the USB ports are duff as I occasionally have the same issue. When I add files to the USB stick , the PC tells me that the memory stick is damaged…and then opens it to show all the gcode files 
Last week my Ender 3KE stopped reading from the memory stick. I turned off the printer, disconnected the display cable from underneath, powered up the printer and watched the screen having a fit! Powered off the printer, connected the display cable again, powered up the printer and it’s all working perfectly now.
Hope this helps 
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Many Thanks for your reply. Yes i also get the messege saying there is aproblem with the drive. Yes will try that and see what happens. Thanks again, Ken