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8 guaranteed-fit options
Guaranteed-fit promise
Every kit is matched to your machine's slots and checked against its published specs before we list it.
SATA 2.5" SSD · SATA 2.5" Hard Drive
SATA 2.5" 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 is verified to fit this system. Pick a drive type, then a capacity. Muted means it fits too — just not stocked right now.
Software for your upgrade — matched to your Lenovo ThinkPad X61s (766634G), ES.
Checks the drivers on your Lenovo ThinkPad X61s (766634G), ES, 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.
Specifications reported for the Lenovo ThinkPad X61s (766634G), ES.
We've already verified which memory and storage upgrades fit this exact machine — they're just not in stock at the moment. Leave your email and we'll tell you the moment any of them is available again. Guaranteed fit, no wrong parts.