How to upgrade RAM in the Lenovo ThinkPad T14 (Gen 2) - TECHTELEGRAPH
Lenovo Thinkpad t490 i7 10th gen | how to upgrade ram in t490 laptop - YouTube
Lenovo ThinkPad T490s - disassembly and upgrade options - YouTube
Amazon.com: Lenovo ThinkPad T490 14" Full HD Business laptop, Intel Core i7-8565U (up to 4.60 GHz), 8GB Ram, 256GB SSD, Windows 10 Pro. 3 Year Warranty : Electronics