Restored Lenovo Black 15.6" ThinkPad T510 Laptop PC with Intel Core i5-520M Processor, 4GB Memory, 320GB Hard Drive and Windows 10 Pro (Refurbished) - Walmart.com
T500 - RAM upgrade resulting in many Beeps on boot - Thinkpads Forum
Is it possible to upgrade Lenovo ThinkPad W510 to 32 GB RAM? - Quora
CMS 8GB (2X4GB) DDR3 10600 1333MHZ NON ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad T510 4384-Xxx; 4384Wan; 4384Y13 - A29 System Specific Memory - Newegg.com
8GB Kit (4GBx2) Upgrade for a Lenovo ThinkPad T510 Series System (DDR3 PC3-12800, Non-ECC, ) at Amazon.com
4GB RAM Memory for Lenovo ThinkPad T Series T510 (4314DDU) Black Diamond Memory Module DDR3 SO-DIMM 204pin PC3-8500 1066MHz Upgrade System Specific Memory - Newegg.com
Lenovo W520 - DDR3 SODIMM and Intel 310 mSATA SSD Install | Kevin J Morse.ca