回复：急问：我用了EAD卡，还能以 H1-B 身份工作吗

This is a gray zone. Sometimes CIS does not know under which circumstance your employment is. My understanding is that if you valid H-1b overlaps your EAD, you can still consider as H-1, otherwise, if your H-1b is effective after your first day of employment, you will be considered as EAD (or AOS status).