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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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I got free Lenovo T420 i put there Sata SSD 250Gb [Win 10 activated with original key for Win 7] i clean it and ive done little cooling mod [Temps drop -20C
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Finally added mSATA SSD to my T420 and now have 3 drives booting multiple operating systems, what a joy 😁 : r/thinkpad
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2nd HDD SSD Hard Drive Tray Replacement for T420 T430 T510 T520 T530 W510 W520 W530, Internal Laptop CD/-ROM Optical Modular Bay Adapter to 2.5 Inch 12.7MM - Walmart.com
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Refurbishing a laptop – Lenovo T420 Remove keyboard, replace CPU thermal paste and clean cooler – Learn ICT Now
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New For Lenovo ThinkPad T420 T420i T430 T430i T510 T510i T520 T520i T530 T530i Replace 12.7mm 2nd HDD SSD Hard Drive Caddy Tray - AliExpress
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