This Power Charger will work like a charm with your Acer CB5-571-C4T3 Chromebook,US standard power cord is also attached for your convenience. We do proudly declare that this AC adapter is Intocircuit part.Besides, our AC adapter is brand new and backed by a 30-day money guarantee,AC input 100V-240V worldwide applicable, 1 year warranty,30 days return and fast shipping, Please purchase with full confidence. So if your original adapter is lost or broken, this would be your choice,1-year warranty and fast shipping.