https://wccftech.com/gigabyte-silently-adds-ryzen-5000-zen-3-ryzen-4000-zen-2-cpu-support-on-a320-motherboards/

It looks like Gigabyte has silently added support for AMD's Ryzen 5000 (Zen 3) and Ryzen 4000 (Zen 2) CPUs on older A320 motherboards. The A320 lineup dates back to the 300-series lineup and was aimed at entry-level PCs.

The A320 lineup of motherboards was aimed primarily at budget and entry-level PC builders and came mostly in mATX flavors. The boards offered a baseline feature set coupled with a standard power delivery system which in most cases didn't even feature any heatsink solution on them as the boards were only recommended for the non-X parts. However, given their sub $100 US prices, they made them perfect choices for PC builders who were looking to build cheaper gaming setups with Ryzen CPUs.