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Lenovo ThinkPad T420 (4180) - full specs, details and review
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CMS 16GB (2X8GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad T420 4177, 4178, 4180, 4236 Series - A13 at Amazon.com
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Memory for a Lenovo - ThinkPad T420 - Kingston Technology
