How much RAM does the ASUS ROG Zephyrus Duo 15 SE GX551QS-XS99 support?

The ROG Zephyrus Duo 15 SE GX551QS-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 SE GX551QS-XS99 use?

It uses DDR4 SODIMM memory modules.

Compatible drive types: NVMe M.2 2280 (PCIe Gen 4) SSD, SATA M.2 2280 SSD.

Guaranteed-compatible DDR4 SODIMM upgrades for the ASUS ROG Zephyrus Duo 15 SE GX551QS-XS99, in matched-kit options that fill your slots.

Verified compatible

Guaranteed-compatible SSD and hard-drive upgrades for the ASUS ROG Zephyrus Duo 15 SE GX551QS-XS99 — matched to its drive bays and slots.

This option is out of stock.

Your slot's PCIe generation isn't published; the drive adjusts to it automatically.

This option is out of stock.

Specifications reported for this system.

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Guaranteed-compatible DDR4 SODIMM upgrades for the ASUS ROG Zephyrus Duo 15 SE GX551QS-XS99, in matched-kit options that fill your slots.

Verified compatible

Guaranteed-compatible SSD and hard-drive upgrades for the ASUS ROG Zephyrus Duo 15 SE GX551QS-XS99 — matched to its drive bays and slots.

This option is out of stock.

Your slot's PCIe generation isn't published; the drive adjusts to it automatically.

This option is out of stock.

Specifications reported for this system.

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.