The Ryzen 7840U and 7640U, by specification, support 2 USB 4 ports and 2 USB 3.2 Gen 2 ports. So it seems that's just a limitation by the architecture.
The Ryzen 7840U and 7640U, by specification, support 2 USB 4 ports and 2 USB 3.2 Gen 2 ports. So it seems that's just a limitation by the architecture.