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- MOBO HP 8478 UPGRADE TO NVME SSD

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07-27-2025 01:42 PM - edited 07-27-2025 01:42 PM
Below is the link to the service manual for your notebook.
It does support NVMe SSD's according to chapter 1, page 2 of the service manual.
The drive capacities listed in the manual are just what HP offered in the model series, not the maximum capacity supported, so if you wanted to install a larger capacity NVMe SSD than 256 GB, that should be fine.
The M.2 slot is PCIe Gen 3.0, so if you buy a Gen 4.0 SSD, it will not run at its maximum advertised read/write speeds from the Gen 3 slot.
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