This TechFuel DC Adapter is specifically designed to work with your Sony VAIO VGN-AS33B Laptop.TechFuel DC Adapters feature the latest technology, the highest quality components, and meet or exceed OEM specifications.TechFuel DC Adapters are designed to power your laptop computer in the most efficent manner possible.All TechFuel products have a one-year limited warranty and a thirty-day money back guarantee.The TechFuel name, images, and contents of this Batteryheads listing are protected by trademarks and copyrights. Copyright 2008 Batteryheads