Based on my experience today:

If you buy a Ryzen 5 2400G and a new motherboard today, take note. You can put it together -- BUT IT WON'T WORK at all -- nothing shows up on the screen. Why? Because first the BIOS has to be flashed with the latest BIOS code. And, you cannot flash the BIOS unless you have a "standard Ryzen CPU" in the socket.

Catch 22 -- between a rock and a hard place -- if all you have is the new motherboard and the new Ryzen 5 2400G. You also need a "standard" non-APU Ryzen CPU for a few minutes.

Anyhow, I took the Ryzen 7 1800X out of the machine I'm typing on. I installed it in the new Motherboard. The old out of date BIOS in the new motherboard recognized the Ryzen 7 1800X and allowed me to flash the new BIOS for Ryzen 5 2400G. Then, all was well smile

Just a heads up, in the event someone else has the itch.

Sapphire Pulse RX7900XTX, 3 monitors = 23P (1080p) + SAMSUNG 32" Odyssey Neo G7 1000R curve (4K/2160p) + 23P (1080p), AMD R9-7950X (ARCTIC Liquid Freezer II 420), 64GB RAM@6.0GHz, Gigabyte X670E AORUS MASTER MB, (4x M.2 SSD + 2xSSD + 2xHD) = ~52TB storage, EVGA 1600W PSU, Phanteks Enthoo Pro Full Tower, ASUS RT-AX89X 6000Mbps WiFi router, VKB Gladiator WW2 Stick, Pedals, G.Skill RGB KB, AORUS Thunder M7 Mouse, W11 Pro