You cannot add "Lenovo ThinkPad X1 Carbon Gen 4 14" i5 6th gen SSD 256GB RAM 8GB 7549 Grade B+ US laptop SKU7549" to the basket because the product is out of stock.
Lenovo ThinkPad X1 Carbon Gen8 14″ i7 10th gen SSD 1TB RAM 16GB Grade A 7594 laptop SKU7594
Display: 14-inch with 1920X1080 Full HD resolution, privacy guard system (press Fn + D to make the screen not readable from angles other than right in front of it)