How Many M 2 Slots Does the Z390-E Have?

The Z390-E has a total of four M.2 slots. Two of these slots are located on the top of the motherboard, and the other two are located on the bottom. The top two slots are compatible with both SATA and NVMe drives, while the bottom two slots are only compatible with SATA drives.

This means that you can install up to four M.2 drives on the Z390-E, but only two of them can be used for NVMe storage. If you need more than four M.2 drives, you’ll need to look at a different motherboard.