?Worry-free warranty? All customers can enjoy free replacement and full refund within 12 months. return windows will close after one month, don’t worry about it, you can click on seller store on right corner “ask a question”. ?Safety Protection?The 65W Laptop Charger With the intelligent chip inside,Featuring overcharging, overheating, overvoltage and short circuit protection,SLE-TECH laptop Charger keeps you and your devices safe. ?Universal Compatibility-2?The Dell Inspiron Charger Compatible with Dell Vostro 13 5000 Series 5301 5370 5390 5391 Dell Vostro 14 3000 Series 3401 3459 3468 3478 3480 3481 3490 3491 Dell Vostro 14 5000 Series 5401 5402 5459 5490 Dell Vostro 15 3000 Series 3501 3558 3559 3583 3590 Dell Vostro 15 5000 Series 5501 5502 5581 5590. ?Universal Compatibility-1?The Dell Laptop Charger Compatible with Dell In-spiron 11 3000 Series:3147 3152 3153 3157 3162 3168,Dell In-spiron 13 7000 Series:7348 7347 7352 7378 7353 7359 7368,Dell In-spiron 14 3000 3452 3451 3458,Dell In-spiron 13 5000 5378 5368,Dell In-spiron 15 3000 series:3552 3558 3568 3559 3551 3555 3567 3565,Dell In-spiron 15 5000 series:5558 5555 5559 5567 5551 5552 5565 5568 5578,Dell In-spiron 15 7000 series:7568 7558 7569 7579,Dell In-spiron 17. ?Power Specs?Output:19.5V~3.34A~65W;Input:100-240V~1.2A,50-60HZ.Connector Size: interior diameter: 3.0 mm; external diameter: 4.5mm.(for 65W Round Connectors).