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Guaranteed-fit promise
Every part is matched to your machine's slots and drive bays and checked against its published specs before we list it.
DDR4 · SO-DIMM · up to 3200 MT/s
≈ $5.87/GB · 8GB total after upgrade
Every option here matches this system's published specifications. Muted means it fits too — we just don't stock it right now. Pick one to switch.
NVMe M.2 2280 (PCIe Gen 4) SSD · SATA 2.5" SSD · SATA M.2 2280 SSD · SATA 2.5" Hard Drive
NVMe M.2 2280 (PCIe Gen 4) SSD · 256 GB
Verified fit for your systemNot stocked right now. It's verified to fit— get an email the moment it's back.
Every drive here matches this system's published specifications. Pick a drive type, then a capacity. Muted means it fits too — just not stocked right now.
How we know NVMe M.2 2280 (PCIe Gen 4) SSD fits
Software for your upgrade — matched to your ASUS M509BA.
Checks the drivers on your ASUS M509BA, installs the safe updates Windows offers, guides the rest to the official download — and confirms exactly which of the upgrades above your machine has room for.
Complete your upgrade. This machine takes both memory and storage — add one from each tab above to do it in one order.
ASUS M509BA takes DDR4 SODIMM memory, 1 slot, up to 24 GB. Every option above matches those requirements, so it typically installs and runs without any firmware change.
“Spec match” means the module matches your system’s published specifications; it isn’t yet confirmed against a manufacturer tool.
Specifications reported for the ASUS M509BA.
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