How much RAM does the HP TouchSmart 520-1100z CTO support?

The TouchSmart 520-1100z CTO supports up to 8GB of memory across 2 slot(s), up to 4GB per slot.

What storage drives fit the HP TouchSmart 520-1100z CTO?

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

Guaranteed-compatible SSD and hard-drive upgrades for the HP TouchSmart 520-1100z CTO, matched to its drive bays and slots.

Guaranteed-compatible SSD and hard-drive upgrades for the HP TouchSmart 520-1100z CTO — 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.

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 TouchSmart 520-1100z CTO, matched to its drive bays and slots.

Guaranteed-compatible SSD and hard-drive upgrades for the HP TouchSmart 520-1100z CTO — 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.

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