另外，有好同學有485的COVER LETTER嗎？-Not necessary.
所有資料都FEDEX寄到這個地址對嗎？-Yes.
USCIS
Attn: FBAS
131 South Dearborn - 3rd Floor
Chicago, IL 60603-5517
Here is the I-485 filing address in your case:
For U.S. Postal Service (USPS) deliveries:
USCIS
PO Box 805887
Chicago, IL 60680-4120
For Express mail and courier deliveries:
USCIS
Attn: FBAS
131 South Dearborn - 3rd Floor
Chicago, IL 60603-5517
Where applicable, you must include a copy of the Form I-797C Notice of Approval, showing that your Form I-130 was accepted or approved.
