How much RAM does the HP ProBook 4520s + AP355ET support?

The ProBook 4520s + AP355ET supports up to 8GB of memory across 2 slot(s), up to 4GB per slot.

What storage drives fit the HP ProBook 4520s + AP355ET?

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

Guaranteed-compatible SSD and hard-drive upgrades for the HP ProBook 4520s + AP355ET, matched to its drive bays and slots.

Guaranteed-compatible SSD and hard-drive upgrades for the HP ProBook 4520s + AP355ET — 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.

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.

Specifications reported for this system.

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Guaranteed-compatible SSD and hard-drive upgrades for the HP ProBook 4520s + AP355ET, matched to its drive bays and slots.

Guaranteed-compatible SSD and hard-drive upgrades for the HP ProBook 4520s + AP355ET — 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.

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.

Specifications reported for this system.