Looking in the specifications of Radeon Vega 8 (the graphics of AMD RYZEN 3 2200G) I can't find any information about 4K support. Does anyone have this information? What will be the maximum resolution and refresh rate through different outputs (DVI/HDMI/DP)?
DVI-D port, supporting a maximum resolution of 1920x1200@60 Hz * The DVI-D port does not support D-Sub connection by adapter. HDMI port, supporting a maximum resolution of 4096x2160@24 Hz * Support for HDMI 1.4 version. DisplayPort version 1.2 can support video resolutions of up to 3840 x 2160 pixels (4K) at a refresh rate of 60Hz
I can't find the ASUS STRIX B350-F and no other B350 motherboard from the ones I can find seems to have a similar configuration. I did find the ASUS PRIME X370-PRO which has a DisplayPort, but it seems a little pricy.
You could also take a look at these boards: MSI B350 Mortar. GigaByte AB350N-Gaming Wifi Gigabyte GA-AB350M-D3H MSI B350l Pro AC