需要：1，I-765 form; 2, a copy of I-94 or passport; 3, a copy of the last EAD; 4, a copy of 485 receipt.
-Correct.
5，還需要兩張照片嗎？
-Yes.
需要在背後簽名嗎？-Yes.
6，還有，需要打指模嗎？如果需要，我應該去哪兒打呢？
-Probably USCIS may just use your old fingerprints for the EAD renewal and thus, you may not need to do it again. If they need it, they will send you the appointment notice which indicates where and when you need to it.
