No and yes.

来源: 于 2007-09-28 10:33:57 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

1) 如果现在申请H4，EAD一用，H4 还有效吗?
H4 will be void when EAD is used.

2) 如果现在不申请H4，EAD一用，还能再申请H4吗?

Yes. But have to go out of US and get your H4 from consulate.