In the Memo or "For" section, write "USCIS I-765" and your SEVIS ID number, found in the in the upper left-hand corner of your I-20. Complete one Form G1450 for each card.To fill out the money order, you will need to "Pay to" U.S. Department of Homeland Security. This notice contains your important USCIS application receipt number, which you must show at the ASC. For detailed instructions or for assistance on how to make an I-901 SEVIS Fee payment, call the SEVP Response Center at 703-603-3400.