Students applying for an F-1 or J-1 visa are required to pay a SEVIS fee to the U.S. Government. This non-refundable fee is different than the visa application fee. You are able to pay the SEVIS fee after you receive your I-20 or DS-2019. Payment instructions will be sent to you along with your I-20. You may also refer to the government website for additional instructions and information.
Be sure to have your printed SEVIS receipt with you when you go to obtain your visa. Also have it readily accessible when entering the country.