problem connexion receive arduino mega 2560 with a mega 32u2

I bought an arduino mega 2560 (from sainsmart) but instead of a 16u2 it is 32u2, now i have trouble to connect it. Could it be a problem of driver? (i don't find any for this find of card!!) what can i do to use it ?

Contact Sainsmart. Must be a variant they made.