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 ThinkPad T400 + ThinkPad Essential Port Replicator.
Free tools from Seifelden — no purchase needed.
Checks the drivers on your Lenovo ThinkPad T400 + ThinkPad Essential Port Replicator, 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.
Get the free tool →