How much RAM does the ASUS PRIME B840M-K-CSM support?

The PRIME B840M-K-CSM supports up to 128GB of memory.

What type of memory does the PRIME B840M-K-CSM use?

It uses DDR5 UDIMM memory modules.

Compatible drive types: NVMe M.2 2280 (PCIe Gen 4) SSD, SATA 2.5" Hard Drive, SATA 2.5" SSD, SATA M.2 2280 SSD.

Guaranteed-compatible SSD and hard-drive upgrades for the ASUS PRIME B840M-K-CSM, matched to its drive bays and slots.

Verified compatible

Guaranteed-compatible SSD and hard-drive upgrades for the ASUS PRIME B840M-K-CSM — matched to its drive bays and slots.

This option is out of stock.

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.

This option is out of stock.

This is a SATA (not NVMe) M.2 drive — confirm your M.2 slot supports SATA drives.

Specifications reported for this system.

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Guaranteed-compatible SSD and hard-drive upgrades for the ASUS PRIME B840M-K-CSM, matched to its drive bays and slots.

Verified compatible

Guaranteed-compatible SSD and hard-drive upgrades for the ASUS PRIME B840M-K-CSM — matched to its drive bays and slots.

This option is out of stock.

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.

This option is out of stock.

This is a SATA (not NVMe) M.2 drive — confirm your M.2 slot supports SATA drives.

Specifications reported for this system.