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Empower your dynamic lifestyleWith an overall weight of just 1.8kg, the extremely portable ASUS X509 is the lightweight laptop that keeps up with your fast-paced lifestyle.Rich, crystal-clear audioASUS SonicMaster is a combination of hardware, software and audio tuning designed with the goal of giving you the very best audio experience. A professional-grade codec ensures precise audio encoding and decoding; while amplifiers, large speakers and resonance chambers perfectly suited to ASUS X509 ensure a powerful audio delivery and deeper bass. Additional signal processing and tuning help refine minute details, filter noise and improve audio clarity so you get truly immersive sound.Exactly your typeThe full-size Chiclet Keyboard on ASUS X509 is perfect for working in dim environments. Ergonomically-designed, its sturdy, one-piece construction and 1.4mm key travel provide a comfortable typing experience.Constantly connectedASUS X509 is equipped with the reversible USB-C™ 3.1 port, featuring an any-way-up design that makes connecting devices as easy as possible. It also delivers data transfer speeds up to 10x faster than older USB 2.0 connections! There are USB 3.1 and USB 2.0 ports, HDMI output, and a microSD card reader so you can easily connect all your current peripherals, displays and projectors with zero hassle.A safe fast-charging and longer-lasting batteryASUS X509 features a 3x the lifespan of standard lithium-ion batteries. With ASUS fast-charge technology, a low battery can be charged to 60 percent in just 49 minutes.