This Power Charger will work like a charm with your ASUS B31N1345 laptop. A free power cord is also attached for your convenience. We do proudly declare that this ASUS B31N1345 149311731 AC adapter is high quality. Besides, our ASUS B31N1345 AC adapter is brand new and backed by a 30-day money guarantee. Please purchase with full confidence. So if your original adapter is lost or broken, this would be your choice. 1 Year Warranty & Fast Shipping.