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Pro: Sturdy hardware. When one NVMe M.2 module is installed you will see the module (in Linux at least) Con: If you install more than one NVMe M.2 modules you will only see one. Do not expect to plug in 4 modules and configure them as a software raid array. Software raid (Intel version of NVMe) is only possible with certain Intel CPU's and certain Intel motherboards. In addition you will have to purchase a license (a key that plugs into the motherboard) if you want to have a raid array. I do not know the status of Linux software for this configuration.