parts-quick 8GB Memory for Lenovo ThinkPad W540 DDR3L 1600MHz PC3L-12800 SODIMM Compatible RAM at Amazon.com
Lenovo ThinkPad W540 20BG0014US 15.6" LED Notebook - Intel Core i7 i7-4800MQ 2.70 GHz - Black - TV9588 - Shoplet.com
Used(good working little Scratch) Lenovo ThinkPad W540 Mobile Workstation 15.6" FHD Business Laptop Computer, Intel Core i7-4800MQ, 8GB RAM, 250GB SSD, NVIDIA Quadro K1100M, Windows 10 Professional - Walmart.com