So long as the ram you currently have(Kingston) is DDR4, it should drop in without any issues. The worst that could happen is that the system boots into BIOS with your rams running at 2133MHz. You should ofc make sure that your motherboard BIOS is up to date to maximize ram compatibility.
If you're unsure of the ram kit you own, please send us a link and we'll be happy to look through the specs
FYI, with Ryzen's platform, it's a good idea to invest on a ram kit that can go up to DDR4-3200MHz since the new AGESA/BIOS updates say that you can go to DDR4-4000MHz.