A-Tech 16GB RAM for Lenovo Flex System x240 M5 | DDR4 2933MHz PC4-23400 ECC RDIMM 1Rx4 Registered Server Memory Upgrade at Amazon.com
Amazon.com: Lenovo Thinkpad X240 12.5 Ultrabook Premium Business Laptop Computer, Intel Dual-Core i5-4300U Up to 2.9GHz, 8GB RAM, 256GB SSD, WiFi, USB 3.0, Windows 10 Professional (Renewed) : Electronics