!!Our laptop adapter works with asus laptop (not all) with round charging port, include most Vivobook/Chromebook/Zenbook models. Please check your laptop model before purchase. Absolutely, you can contact LAP POW service team anytime and anywhere,we are always ready to provide you with the best service!!. LAP POW are focus on laptop and other electronic product charger's manufacture from 2017. All of our products are put through rigorous quality control measures to ensure safe and reliable operation. Our products strictly comply with industry standards and safety mechanisms built-in to protect your devices. We are committed to providing high-quality products and best services, sincerely hope that consumers can get satisfied shopping and user experience from LAP POW. LAP POW Customer Service: 30 Days refund period / 12 Months - Free Exchange and friendly customer service. CE/FCC/RoHS Listed Safety Certified. Get a premium replacement charger for your old device now. Compatible with Asus Zenbook Prime UX330 UX330U UX330UA U38 U38DT U38N ZenBook Flip UX360 UX360C UX360CA UX360U UX360UA UX305 UX305C UX305CA UX305F UX305FA UX305L UX305LA UX305U UX305UA VivoBook F510UA F510U F510QA F510Q F510 15 F512FA F512DA F512F F512D F512 F510UA-AH55 F510UA-AH51 F510UA-AH50 F510QA-WB91 F510QA-DS99. This replacement power supply compatible with Asus F553 F553M F553MA F556 F556U F556UA F302 F302L F302LA K556 K556U K556UA Taichi 21 Taichi 31. Designed to be the perfect travel companion, the adapter has a clever design that allows the DC cable to be wrapped around of itself for easy cable storage. Our laptop charger for asus compatible with Asus X540 X540L X540LA X540S X540SA X541 X541S X541SA X541U X541UA. LAP POW Portable Laptop Charger for Asus Notebook AC Adapter Laptop Charger Power Cord. Output: 19V 1.75A-2.37A 45W/33W; LAP POW Foldable AC adapter connector size: 4.0mm * 1.35mm; NEW Plus: 1 * 4.0mm*1.35mm to 5.5mm*2.5mm female to male conversion cable, fit for ASUS laptops with a connector size of 5.5*2.5mm.