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HP Color LaserJet Pro MFP M479fdw

I get error code B8237140 every time I insert usb drive. I get it after I insert usb before trying to scan. I get it if I try to scan then put my USB in. No matter what I do. I can't find any identifier for that error code.I don't have this printer tied into a network,. I have been using it wirelessly.

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Have you tried a different stick formatted to FAT32 and preferably in a size of 64gb or smaller? You are installing into the front USB port?

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The one I'm using is a 15gb formatted to Fat32. And yes, the front USB port. Any other suggestions? 

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