How much RAM does the ASUS ROG Zephyrus Duo 15 GX550LXS-XS99 support?

The ROG Zephyrus Duo 15 GX550LXS-XS99 supports up to 48GB of memory across 1 slot(s), up to 48GB per slot.

What type of memory does the ROG Zephyrus Duo 15 GX550LXS-XS99 use?

It uses DDR4 SODIMM memory modules.

Guaranteed-compatible DDR4 SODIMM upgrades for the ASUS ROG Zephyrus Duo 15 GX550LXS-XS99, in matched-kit options that fill your slots.

Good to know

Maximum capacity per slot is inferred from total capacity ÷ number of slots.
This model has some on-board (soldered) memory in addition to its upgrade slot(s).
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

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Guaranteed-compatible DDR4 SODIMM upgrades for the ASUS ROG Zephyrus Duo 15 GX550LXS-XS99, in matched-kit options that fill your slots.

Good to know

Maximum capacity per slot is inferred from total capacity ÷ number of slots.
This model has some on-board (soldered) memory in addition to its upgrade slot(s).
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.