can i use m.2 pcie 4.0 in 3.0 slot
Mainboard PC MSI PRO Z690-A DDR4 - MemoryZone
1 x PCIe 4.0/3.0 x16 slot (supports x4 mode). 2 x PCIe 3.0 x16 slots (support x4 mode). 1 x PCIe 3.0 x1 slot. Storage. Supports 3 x M.2 slots and 4 x SATA 6Gb/s ...
M.2 8x4 Silent Gen4 PCIe Card - SONNETTECH
PC-Hardware/The M.2 slot: What is it and how can I use it? ... On the other hand, a PCIe 3.0 SSD works fine in a PCIe 4.0 M.2 slot.
Mainboard GIGABYTE B650 GAMING X AX
Chipset: 2 x PCI Express x16 slots, supporting PCIe 3.0 and running at x1 (PCIEX1_1/2) ... CPU: 2 x M.2 connectors (Socket 3, M key, type 25110/2280 PCIe 4.0 x4/ ...