是不是以下的内容就是呀？先谢谢了~~

Individuals who are already in the U.S. and remain in legal status are encouraged to apply at non-border U.S. embassies and consulates in conjunction with foreign travel for business or pleasure. Those who plan to visit Canada, Mexico or, in the cases of students and exchange visitors, adjacent islands, may re-enter the U.S. within thirty days on expired visas as long as they possess a valid I-94 form unless they are excluded from automatic revalidation, as noted below.
怎么没有提到签证的类型呢？如果F2/H4，485PENDING的情况下用了EAD，是否还是符合30天的规定呢？