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Uploads from a CD, Floppy, memory card or other removable media may fail due to data timing problems.
(Keep at 1 for JPEG, TIF, PSD etc. But if you are sending multi image file types such as PowerPoint, ZIP, SIT, PDF, etc, change this value to reflect the actual number of individual images or pages.)
Visa, Master Card and Discover Card codes are a 3-digit number on the back side of the card, following the card number.
The American Express code is a 4-digit number printed on the front of the card.