For sale is a used Lenovo ThinkPad X1 Extreme Gen 4, featuring an Intel Core i7-11800H, 512GB SSD, and matte 16" 4K screen with a 16:10 aspect ratio and 600 nits peak brightness. The model came with 16GB RAM, which I upgraded with an additional stick to 32GB.&nbsp;<div><br></div><div>Ships USPS Priority with original 230W charger and box.&nbsp;</div>