Well, you're right, after setting the SD CARD to save, it actually performs what I want it to do. Thank you!

By the way, my problem was not due to a faulty USB connector but to a digitizing level issue. I tried different ISO settings and at small values (say < ISO 800), the bias and even the dark is so low that digitizing structures appear. These structures don't show at ISO 1600+.

Dominique

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