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T420] RAM Stick won't fit in slot : r/thinkpad
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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
8GB Stick for IBM Lenovo ThinkPad T Series T420 T420i T420s T520 T520i. SO-DIMM DDR3 Non-ECC PC3-10600 1333MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com
Used Lenovo Black ThinkPad T420 14'' PC Laptop Intel i5 Dual Core 2.5GHz 8GB RAM 500GB HDD Intel HD Graphics 4000 1600 x 900 Display Windows 10 Professional 64-Bit - Walmart.com