Sikon Portable Laptop Charger When you're on-the-go you can quickly put this power bank in your briefcase, backpack or carrying bag. It keeps everything going smoothly when your devices are thirsty for power. Universally Compatible for Laptop and Smart Devices For AC Output: MacBook 12", MacBook Air 13.3", MacBook Pro 13.3", MacBook Pro 15", Dell XPS 13", Microsoft Surface Pro 4 12.3", HP TPN-C116, THINKPAD E430, etc. For USB and Type-C Output: iPhone series, Galaxy series, GoPro, Digital Cameras, Tablet, Nintendo Switch, etc. WARM TIPS: 1. Please do carefully read the user manual before use. To ensure its long-term usability and lifecycle, don't take apart or strike the product. 2. When the AC output is turned on, it 's normal to hear a slight noise from the battery. Because the internal fan is working to cool down the battery. 3. Don't shake when using AC outlet for charging.