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ThinkPad released in 2011. This version of the T420 is thicker than the T420s and lacks integrated USB 3.0. The T420i uses the same chassis, so most T420 repair guides work interchangeably.

12 Questions View all | 16 Parts Shop

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ram does not support

my question is

lenovo laptop t420 not support 4gb ram and not open laptop

Answered! View the answer I have this problem too

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Thank you very much, for given answer to my question

yes, lenovo accept 16gb memory

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Your Lenovo will support 16GB of RAM. Her's how to install it:

ThinkPad T420 Memory Replacement

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eswar will be eternally grateful.
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