The Pro 500 joins AMD's list of motherboard chipsets for small form factor systems.
AMD Lists New Pro 500 Motherboard Chipset for the AM4 Socket : Read more
AMD Lists New Pro 500 Motherboard Chipset for the AM4 Socket : Read more
If we had to make a guess, we suspect the Pro 500 chipset is based on a similar design as AMD's high-end X570 chipset.
... AMD’s X300, A300, and PRO 500 chipsets provide processor-direct access for excellent performance. ...