Laptop Doctors - Lenovo Thinkpad E540 Intel Core I5 4200M 2.5GHz (Up to 3.1GHz) 8GB DDR3 Ram 240GB SSD DVDRW Full Size Keyboard With Number Pad Bluetooth HDMI & VGA 2 x
Lenovo ThinkPad E540 15.6" HD Intel Core i3 2.4GHz 4th Gen 8GB 128GB SSD Windows 10 Pro with Webcam Numeric Keypad HDMI and Wi-Fi
MICROSOFT AUTHORIZED REFURBISHED LENOVO THINKPAD E540 BUSINESS NOTEBOOK INTEL:I5-4200M/CI5-2.50G 8GB/2-DIMM 128GB/SSD MR DVDRW GBE 802.11BGN+BT WEBCAM INTEL-HD4600/IGP 15.6AGFHD/TOUCH W10P-64 6-CELL 5.4LBS BLACK 1YR - VSI Technologies
Lenovo Thinkpad E540 Hard Drive Replacement - iFixit Repair Guide
2nd HDD SSD Hard Drive Caddy Adapter Bay for Lenovo ThinkPad E540 E440 L540 L440 | eBay