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Find your Asus model and compatible RAM & SSD upgrades
SOLVED] - ram upgrade for office laptop | Tom's Hardware Forum
X540SA Onboard N3050 CPU DDR3 4GB memory mainboard For ASUS X540S X540SA X540SAA F540S laptop motherboard 90NB0B30 R00031 Used|Laptop Motherboard| - AliExpress
X540SA Laptop Motherboard for ASUS VivoBook X540SA X540S X540 F540S Test mainboard 2GB-RAM N3050 CPU : Amazon.ca: Electronics
For ASUS F540S F540SA R540S R540SA X540S X540SA Motherboard 8G /4G Mainboard | eBay
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Find your Asus model and compatible RAM & SSD upgrades
How to disassembly Asus F554L for Hard Disk Replacement or SSD - YouTube
Specs ASUS VivoBook X540SA-XX012T N3050 Notebook 39.6 cm (15.6") HD Intel® Celeron® 2 GB DDR3L-SDRAM 500 GB HDD Wi-Fi 4 (802.11n) Windows 10 Home Brown Notebooks (90NB0B31-M00740)
Asus X555LA-SI305041 RAM Replacement - iFixit Repair Guide