Can PCIe Solid State Drives store items like hard drive?

I am customizing a workstation in a computer brand website and it offers PCIe Solid State Drives category and hard drive category.

I want to add a solid state drive in the workstation, but I could not find solid state drive under hard drive category.

Then I check the PCIe Solid State Drives category and there are solid state drive options (bootable & non-bootable) for me to add to workstation.

1) Can a 256GB 4*Drive PCIe x16 M.2 Solid State Drive Card (boot/non-boot) be used to store items like an ordinary (SATA 7.2k RPM) hard disk?

2) Will the PCIe Solid State Drive appear as a drive in My Computer in Workstation like the ordinary hard drive?

Thank you.

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