How much RAM does the HP Presario 5423US support?

The Presario 5423US supports up to 1.5GB of memory across 3 slot(s), up to 0.5GB per slot.

What type of memory does the Presario 5423US use?

It uses DDR DIMM memory modules.

Compatible drive types: IDE / PATA 2.5" Drive.

Guaranteed-compatible SSD and hard-drive upgrades for the HP Presario 5423US, matched to its drive bays and slots.

Guaranteed-compatible SSD and hard-drive upgrades for the HP Presario 5423US — 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.

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Guaranteed-compatible SSD and hard-drive upgrades for the HP Presario 5423US, matched to its drive bays and slots.

Guaranteed-compatible SSD and hard-drive upgrades for the HP Presario 5423US — 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.