Guaranteed Compatible Upgrades for your Lenovo ThinkPad T420
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The specifications for standard configuration on your Lenovo ThinkPad T420 system can be found by clicking on the red button above and are also listed in your user manual. This information is for reference so that you know you are purchasing the correct RAM for your ThinkPad T420.
All memory modules found on this page are guaranteed to work in your Lenovo ThinkPad T420 - or your money back.
Memory Giant is here to help if you need it - from ordering to installation, we have a qualified support staff ready to help over the phone or online should you have any questions.