The Adapter is a 90W rated power supply and replaces dell studio 1747 laptop charger. Designed to meet Dell’s original specifications. The Replacement Dell AC Adapter is designed to be 100% manufacturer compatible and will meet OEM specifications.Replacement For Dell Studio 1747 Adapter is rated at 19.5V 4.62A 90W.The high quality laptop charger for dell studio 1747 provides your laptop with safe and reliable power.It is over Charge protection, Voltage protection, Temperature protection, Short circuit protection, enjoys 1-Year Warranty,60-Day Money Back!Welcome to replacement laptop AC power adapters online store.Replacement Laptop AC Adapters and Laptop Car Chargers for Notebook Computers.Replacement laptop AC adapter is guaranteed to meet or exceed original laptop AC adapter.Full 2 hours burning test; 3 times quality check and 2 times drop test by QC before package.Warranty and Guarantee: 1 year warranty, 60 days money back.