4GB MEMORY RAM FOR IBM LENOVO THINKPAD X201 3626-W1U X201 3626-RYU T510 4349-2MU | eBay
Lenovo T510 Upgrades have arrived (CPU + extra memory) | TechPowerUp Forums
Refurbished: Lenovo Thinkpad T510 Laptop i5 520M 2.4GHz 3GB DDR3 RAM 120GB SSD DVDRW Windows 10 HOME 32 bits 15.6" Widescreen 90 days warranty, AC adapter and battery, built in wifi without