Can You Put M.2 SSD in PCIe Slot? - PC Guide 101
edit: If I have to guess the M.2 slot right next to PCIe slot is gen 4, not sure of the other two M.2 slots next to DIMM.
Lenovo IdeaPad L340-15IRH Gaming | SSD & RAM Upgrades | Crucial ...
Laptop Lenovo IdeaPad L340-15IRH 81LK00FAVN (Core i5-9300H/ 8GB DDR4 2666MHz/ 1TB 5400rpm, x1 slot SSD M.2 PCIe/ GTX 1050 3GB GDDR5/ 15.6 FHD/ Win10) – Hàng Chính Hãng.
Best M.2 NVMe SSD Cloner (Software) - AOMEI Backupper
In fact, there are 4 types of M.2 SSD disks, namely M.2 NVMe SSD, M.2 SATA SSD, 2.5'' SATA SSD, and 2.5'' SATA HDD. Which is the fastest M.2 SSD disk.