The "Y.M.F.", Lenovo ThinkPad L420 - 2/3, The Review
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
Buy (Renewed) Lenovo Thinkpad L420 14.1-inch Laptop (2nd Core I5 2520M/6GB/320GB/Window 7 Pro 64 Bit/Integrated Graphics), Black Online at Low Prices in India - Amazon.in