Question:

When submitting form I-90 to renew a green card, What supporting docs are needed?
The application instructions only mention that a copy of the current green card is needed. But I'd like to know if other documents(copies of) need to be sent. If so what docs? Thank you.

Answers:

A-Best: Read the instructions, it'll tell exactly what documents are needed  

A: If you have a copy of your green card, send the copy. If you don't have a copy of your green card and your 18 years and older, then send the copy of your ID such as copy of passport, drivers license that shows your name, photo, birth date, signature. And also read the instruction. http://www.uscis.gov/files/form/i-90instr.pdf