Configuring the PCIe x4 slot to act as 4 individual x1 ports

[Tigger]

But with such a switch card, the RockPro64 could become an amazingly cheap crypto mining host, as long as drivers are available.

But the GPU card for mining is very expensive !!!

Yes it is. But before the RockPro64, people would spend 250-300$ on a motherboard that can host 4-8 cards even with splitters or switches. With the RockPro64, they can cut the prices down a bit.

You are outdated.

8 x RX 580 + 1800 Watt PSU ready to rock and roll : https://pt.aliexpress.com/store/product/...Title=true
OR
8 x RX 570 + 1800 Watt PSU ready to rock and roll : https://pt.aliexpress.com/store/product/...Title=true