Lenovo ThinkPad T14 Gen 2: SSD/RAM upgrade - YouTube
Lenovo Thinkpad X250 12.5" Ultrabook Business Laptop Computer, Intel Dual-Core i5-5300U Up to 2.9GHz, 8GB RAM, 256GB SSD, WiFi, Bluetooth, USB 3.0, Windows 10 Professional (Reused) - Walmart.com
How to upgrade the RAM and SSD on the Lenovo ThinkPad X1 Extreme