Difference Between this Two key MQB.
XSMQB1- Smart key, mostly for MQB (regular and kessy) new 48 AES , also older cars with 48 KESSY (tiguan ,golf 6 etc)
XEMQB1 – Super Key , Support ID 48, 48, 4D etc … is a new version of old NXP wireless key but supporting more transponder due to built in Xt27 Super chip.