2 NVMe SSD's which slot to put OS on and does it matter?

What is a NVMe SSD and How Fast is it? m 2 slot ssd 22 mm × 110 mm A size comparison of an mSATA SSD and an 2242 SSD B+M , 12-19 and 59–66, SATA, PCIe ×2, and SMBus Maximum m2 slot 2 NGFF MSATA SSD To SATA Adapter 2 In 1 Converter Card For PC Laptop · 4 Port NVME SSD To PCIE X16 Adapter Converter Card Support 2230224222602280

m2 slot pc M and 2 SSD, you should check which type of slot your computer is using An B key slot is only compatible with B+M key SSDs, and an M