Stay connected
Compatibility tips and upgrade deals, straight to your inbox. No spam.
Your system
8 guaranteed-fit options
Matched to this machine's drive bays and slots.
This option is out of stock.
This option is out of stock.
Specifications reported for the Lenovo R400.
Free tools from Seifelden — no purchase needed.
Checks the drivers on your Lenovo R400, 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.
Free Upgrade Assistant
Confirms which of these upgrades your machine has room for.