deb http://ftp.us.debian.org/debian/ jessie main non-free
#deb-src http://ftp.us.debian.org/debian/ jessie main non-free

deb http://security.debian.org/ jessie/updates main non-free
#deb-src http://security.debian.org/ jessie/updates main non-free

deb http://ftp.us.debian.org/debian/ jessie-backports main non-free
#deb-src http://ftp.us.debian.org/debian/ jessie-backports main non-free