Question ASUS Prime x370-A - PCI slots question

mjonis

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Jul 29, 2019
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Just to start, this is the x370-A and NOT the Z370-A.
BIOS is "latest" and I'm using Ryzen CPU
The latest motherboard manual is a bit confusing to me. LOOKS like there's 5 PCI slots? Says AMD Ryzen there's 1xPCI Express 3.0/2.0 x16, AMD x370 Chipset there's one PCIe 2.0x16, two PCI 2.0x1, and two PCI slots (which would make 6?? total)?

So basically slot 1 (the top-most slot) is the ONLY PCIe3.0x16 slot? The other one (I believe it would be the 3rd one "below" the first one), whilst also an x16 slot, is NOT PCIe 3.0, but rather PCIe 2.0x16??
(I'm using the diagram on page 9, or section 1.2 of the PDF).

In case anyone is wondering why, it's because I was thinking about adding a PCIe card for USB-c 3.2, but they all require aPCIe 3.0 slot for the faster transfer rates. So if there's only one, I'll leave it the video card and just not worry about it, as I think the USB-C 3.1 speeds are just as "slow/fast" as the USB-A 3.1