The primary drive of your computer varies with the storage configuration. For computers:
With a M.2 drive, the M.2 drive is the primary drive
Without a M.2 drive, the 2.5-inch hard-disk drive is the primary drive
Table 13. Storage specifications
Intel Optane memory
Intel Optane memory functions only as a storage accelerator. It neither replaces nor adds to the memory (RAM)
installed on your computer.
NOTE: Intel Optane memory is supported on computers that meet the following requirements:
7th Generation or higher Intel Core i3/i5/i7 processor
Windows 10 64-bit version or higher (Anniversary Update)
Latest version of Intel Rapid Storage Technology driver
Table 14. Intel Optane memory