What PCIe spec does the m.2 slot of the Visionfive 2 use?

Community RISC-V
1

I am wondering which m.2 SSD I should use in my VisionFive 2, and want to know if the m.2 slot supports PCIe 4.0 or some other speed.

2

VisionFive 2 offers an M.2 M-Key SSD socket with 1 × PCIe 2.0 interfaces, providing high speed storage access.

3

VisionFive 2 offers an M.2 M-Key SSD socket with 1 × PCIe 2.0 interfaces, providing high speed storage access.

Kioxia RC20 500GB, Western Digital SN570 250GB