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

The PRIME B840M-A-CSM supports up to 256GB of memory.

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

It uses DDR5 UDIMM memory modules.

What storage drives fit the ASUS PRIME B840M-A-CSM?

Compatible drive types: NVMe M.2 22110 (PCIe Gen 4) SSD, NVMe M.2 2242 (PCIe Gen 4) SSD, NVMe M.2 2260 (PCIe Gen 4) SSD, NVMe M.2 2280 (PCIe Gen 4) SSD, SATA 2.5" SSD, SATA M.2 2280 SSD.

Storage Upgrades for ASUS PRIME B840M-A-CSM

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

Verified compatible

Storage upgrades

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

NVMe M.2 22110 (PCIe Gen 4) SSD

This option is out of stock.

Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

NVMe M.2 2242 (PCIe Gen 4) SSD

This option is out of stock.

Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

NVMe M.2 2260 (PCIe Gen 4) SSD

This option is out of stock.

Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

NVMe M.2 2280 (PCIe Gen 4) SSD

This option is out of stock.

SATA 2.5" SSD

This option is out of stock.

The drive bay size is inferred from the system's reported storage interface.

SATA M.2 2280 SSD

This option is out of stock.

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

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Storage Upgrades for ASUS PRIME B840M-A-CSM

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

Verified compatible

Storage upgrades

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

NVMe M.2 22110 (PCIe Gen 4) SSD

This option is out of stock.

Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

NVMe M.2 2242 (PCIe Gen 4) SSD

This option is out of stock.

Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

NVMe M.2 2260 (PCIe Gen 4) SSD

This option is out of stock.

Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

NVMe M.2 2280 (PCIe Gen 4) SSD

This option is out of stock.

SATA 2.5" SSD

This option is out of stock.

The drive bay size is inferred from the system's reported storage interface.

SATA M.2 2280 SSD

This option is out of stock.

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