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我现在是opt，140批了，485pending。以前以为换工作没问题，后来又听说最好还是投递485开始180天以后换比较好，
-Because your I-140 is EB-1A, you can change your job any time you want to (not need I-148 pending for > 180 days). You had better apply for I-485 based EAD or change your status to H-1 in case your OPT expires before your I-485 is approval.

说是万一485 出问题，opt的保不住啥的，请问有知道的具体说说嘛。先谢谢了