How much RAM does the HP Pavilion 27-a155nz All-in-One support?

The Pavilion 27-a155nz All-in-One supports up to 16GB of memory across 2 slot(s), up to 8GB per slot.

What type of memory does the Pavilion 27-a155nz All-in-One use?

It uses DDR4 SODIMM memory modules.

Compatible drive types: SATA 2.5" Hard Drive, SATA 2.5" SSD, SATA 3.5" Hard Drive.

Guaranteed-compatible DDR4 SODIMM upgrades for the HP Pavilion 27-a155nz All-in-One, in matched-kit options that fill your slots.

Verified compatible

Guaranteed-compatible SSD and hard-drive upgrades for the HP Pavilion 27-a155nz All-in-One — matched to its drive bays and slots.

This option is out of stock.

The drive bay size is inferred from the system's reported storage interface.
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.

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

Specifications reported for this system.

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Guaranteed-compatible DDR4 SODIMM upgrades for the HP Pavilion 27-a155nz All-in-One, in matched-kit options that fill your slots.

Verified compatible

Guaranteed-compatible SSD and hard-drive upgrades for the HP Pavilion 27-a155nz All-in-One — matched to its drive bays and slots.

This option is out of stock.

The drive bay size is inferred from the system's reported storage interface.
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.

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

Specifications reported for this system.