Can You Use a PCIe 4.0 SSD On Your Existing Motherboard?
The M.2 slot must have 4 PCIe lanes in order to install an NVMe SSD. As a result, a system can offer more M.2 slots the more PCIe lanes it has.
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Expansion slots: 1 PCIe 3 x4 (x16 connector); 1 PCIe 3 x16 (x16 connector); 1 M.2 2230 PCIe 3 x1; 2 M.2 2280 PCIe 3 x4; 2 PCIe 3 x1 (x4 connector); USB ...
Mini PC Intel NUC 11 Extreme Kit - RNUC11BTMI70000
PCI Express RevisionGen 4 (m.2 22x80 slot); Gen 3 (otherwise) · PCI Express Configurations ‡PCIe x4 Gen 4: M.2 22x80 (key M) PCIe x1 Gen 3: M.2 22x42 (key B)