How much RAM does the ASUS X55U-AB21 laptop support?

The X55U-AB21 laptop supports up to 4GB of memory across 1 slot(s), up to 4GB per slot.

What type of memory does the X55U-AB21 laptop use?

It uses DDR3 SODIMM memory modules.

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

Guaranteed-compatible SSD and hard-drive upgrades for the ASUS X55U-AB21 laptop, matched to its drive bays and slots.

Guaranteed-compatible SSD and hard-drive upgrades for the ASUS X55U-AB21 laptop — 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 ASUS X55U-AB21 laptop, matched to its drive bays and slots.

Guaranteed-compatible SSD and hard-drive upgrades for the ASUS X55U-AB21 laptop — 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.