Gigabyte over time has had 3 revisions of the GA-A320M-S2H motherboard. They are all very similar but it is important to know which revision you have because the downloads may be different for each revision. Note all the revisions have the AMD A320 chipset.
If you go to the following links and click on Support you will find:
* Downloads for drivers (Audio, Chipset, LAN, SATA, BIOS & Utilies)
* CPU support (which AMD CPUs the motherboard supports)
* Manual
* Support List (Memory, SSD, M.2)
GA-A320M-S2H (rev. 1.x)
GA-A320M-S2H (rev. 1.x) Key Features | Motherboard - GIGABYTE Global
GA-A320M-S2H (rev. 2.0)
GA-A320M-S2H (rev. 2.0) Key Features | Motherboard - GIGABYTE Global
GA-A320M-S2H (rev. 3.x)
GA-A320M-S2H (rev. 3.x) Key Features | Motherboard - GIGABYTE Global
Like I said you have to look at each motherboard individually to see what downloads they have and which CPUs they support.
AMD released new chipset generations over time
A320, B350 and X370 (February 2017)
B450 and X470 (March 2018)
B550 (June 2020) and X570 (July 2019)
Each chipset generation represented an advancement in motherboard technology.
Motherboards with A320, B350 and X370 chipsets came out with the Ryzen 1000 series CPUs. However, many of the motherboards with these chipsets also support newer Ryzen 2000, 3000 and 5000 series CPUs.
Motherboards with B450 and X470 chipsets came out with the Ryzen 2000 series CPUs. However, many of the motherboards with these chipsets support older 1000 and newer Ryzen 3000 and 5000 series CPUs.
Motherboards with B550 and X570 chipsets came out with the Ryzen 3000 series CPUs. However, many of the motherboards with these chipsets support 1000 and newer Ryzen 3000 and 5000 series CPUs.
AMD Chipsets
List of AMD chipsets - Wikipedia