AC Adapter Charger for ASUS VivoBook 15 X540NA, R540NA-RS02 | eBay
33W adapter Asus VivoBook X540NA-GQ007 charger 4.0mm x 1.35mm
For ASUS VivoBook X540NA R540NA-RS02 Laptop AC Adapter Charger Power Supply Cord | eBay
Asus X540NA - Genuine OEM Laptop Charger | AC Adapter
New 19V 2.37A Power Supply Cord For ASUS X540S X540SA X540SC X540N X540NA X540NV X540U X540UA X540UB Battery Charger AC Adapter|Laptop Adapter| - AliExpress