How much RAM does the HP Pavilion 27-xa0999nh All-in-One support?

The Pavilion 27-xa0999nh All-in-One supports up to 32GB of memory across 2 slot(s), up to 16GB per slot.

What type of memory does the Pavilion 27-xa0999nh All-in-One use?

It uses DDR4 SODIMM memory modules.

Compatible drive types: NVMe M.2 2280 (PCIe Gen 4) SSD, SATA 2.5" Hard Drive, SATA 2.5" SSD, SATA M.2 2280 SSD.

This option is out of stock.

Your slot's PCIe generation isn't published; the drive adjusts to it automatically.

This option is out of stock.

Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

This option is out of stock.

This option is out of stock.

This is a SATA (not NVMe) M.2 drive — confirm your M.2 slot supports SATA drives.