A:Answer This all-in-one computer includes one M.2 2230/2280 slot for PCIe solid-state drive and one SATA slot for 2.5-inch HDD.
2.5-inch hard-drive, 5400 RPM (Interface Type- SATA AHCI, up to 6 Gbps) is supported up to 1 TB.
2.5-inch hard-drive, 7200 RPM (Interface Type- SATA AHCI, up to 6 Gbps) is supported up to 1 TB.
M.2 2230, solid-state drive (Interface Type-PCIe NVMe Gen3 x4, up to 32 Gbps) is supported up to 1 TB.
M.2 2230, solid-state drive (Interface Type-PCIe NVMe Gen4 x4, up to 64 Gbps ) is supported up to 1 TB.
For more details on parts upgradation, we recommend contacting the Dell Technical Support team after the purchase. They are available on Facebook and Twitter(@Dellcares).
