How much RAM does the Sony VAIO VGN-BZ21XN laptop support?

The VAIO VGN-BZ21XN laptop supports up to 4GB of memory across 1 slot(s), up to 4GB per slot.

What storage drives fit the Sony VAIO VGN-BZ21XN laptop?

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

Guaranteed-compatible SSD and hard-drive upgrades for the Sony VAIO VGN-BZ21XN laptop, matched to its drive bays and slots.

Guaranteed-compatible SSD and hard-drive upgrades for the Sony VAIO VGN-BZ21XN 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 Sony VAIO VGN-BZ21XN laptop, matched to its drive bays and slots.

Guaranteed-compatible SSD and hard-drive upgrades for the Sony VAIO VGN-BZ21XN 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.