1.1: M.2NVMe to PCIe X1 Adapter: Converting one PCIe X1 slot on the motherboard to the M.2 Key M slot allows you to install M.2 NVMe SSD into this Key M slot 2.2:Advantage and Disadvantage: The advantage is that instead of taking up the X16 slot, it utilizes the PCIE X1 slot on the motherboard. The disadvantage is that it only has the maximum bandwidth of PCIe X1, can not reach PCIe X4 full speed 3.3:No limit to the capacity of the M.2 NVMe SSD: Support 2T/4T (Note: Support 2230/2242/2260/2280 PCIe (NVMe/AHCI) 4.0/3.0 M.2 SSD, not support M.2 SATA SSD) 4.4:Support OS Booting: Reinstall the OS, and set up BIOS/UEFI boot from this M.2 NVMe SSD (Note: Some motherboards are too old to support OS booting. In this case, M.2 NVMe SSDs can be used as storage disks) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store