CMS 8GB (1X8GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Asus/Asmobile® X Series Notebook X540LA, X554LJ-XX1153D - A8 at Amazon.com
ASUS Laptop model X540L-JXX853T how to upgrade RAM 2018 - YouTube
X540LJ Mainboard For ASUS VivoBook X540L R540L F540L A540L X540LA X540LJ Laptop Motherboard With i5 5TH CPU 4G-RAM 100% Test OK
OFFTEK 4GB Replacement Memory RAM Upgrade for Asus X540LA (DDR3-12800) Laptop Memory at Amazon.com
ASUS X540L X540LA-SI30205P Complete Disassembly RAM SSD Hard Drive Upgrade Replacement Repair - YouTube
X540la Motherboard I3-4th Gen For Asus X540l X540lj X540la Laptop Motherboard X540la Mainboard X540la Motherboard Test 100% Ok - Laptop Motherboard - AliExpress
Can I upgrade my laptop RAM (ASUS X540L) from 8GB to a 12 or even 16GB? - Quora
A-Tech 8GB Module for ASUS X540LA Laptop & Notebook Compatible DDR3/DDR3L PC3-12800 1600Mhz Memory Ram (ATMS393746B12351X1) at Amazon.com