CG devices and the XCZU2EG/XCZU3EG are not available in the -3 speed grade. CG devices can only migrate to EG or EV devices in non -3 speed grades to maintain similar performance. Likewise, EG and EV devices can only migrate to a CG device in non -3 speed grades to maintain similar performance. EG to EV devices can migrate to any speed grades, as well as EV to EG.