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.
eswar @raoe
Rep: 11
Posted: Jul 4, 2017
my question is
lenovo laptop t420 not support 4gb ram and not open laptop
Is this a good question?
Thank you very much, for given answer to my question
yes, lenovo accept 16gb memory
Jul 5, 2017 by eswar
mayer @mayer
Rep: 686.1k
MacHale Enterprises
3.4k
1.1k
2.6k
Posted: Jul 5, 2017
Your Lenovo will support 16GB of RAM. Her's how to install it:
ThinkPad T420 Memory Replacement
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Thank you very much, for given answer to my question
yes, lenovo accept 16gb memory
by eswar