Opening the Lenovo ThinkPad E15 for NVMe and RAM Upgrades - YouTube
Lenovo ThinkPad E15 G2 Laptop, 15.6" FHD IPS, i7-1165G7, 16GB, 512GB SSD, Up to 10.8 Hours Run Time, AX Wi-Fi, No Optical, USB-C, Windows 10 Pro - The Media Shop
Lenovo ThinkPad E15 Gen 2 Intel Core i5-1135G7 8GB 256GB SSD 15.6" Windows 10 Professional 64-bit