Most merchant terminals support MasterCard, Visa, American Express, Discover, Diners Club/Carte Blanche and JCB cards. Although we can support all credit card types, our processors only have the ability to process settlement (payment to merchants) for MasterCard, Visa, DC/CB, Discover and JCB. When processing with an established AMEX SE number, all transactions will be paid out directly by AMEX, unless we have requested via the application to establish a new AMEX SE number that is directly issued by the processor.