20V 8.5A 170W USB AC Adapter Charger for Lenovo Yoga 45N0375 4X20E50574 PA-1171-71 ADL17 0NLC3A, 4X20E50582 For Lenovo W540 T451

Step 1. please check the input data on your laptop or your adapter output.You will find voltage and current data.Such as 20V 3.25A 、19V 3.42A、19V 2.37A....Step 2. check your connection plug size.Out diameter * lnner diameterSuch as 5.5*2.5mm、4.0*1.7mm、 4.0*1.35mm....If still not understand ,please ask help from us !

In Great Working Condition. We guarantee our products will charge your device as efficiently as the original charger. In addition, our products are in compliance with top industry standards. 1 Year Warranty- we will exchange your product free of charge should it become defective for 1 years from the date of purchase.You can contact with us any time!

1.ABOUT CUSTOMSWe are not responsible for custom duty or import tax.But you can ask us send you INV .2.ABOUT FEEDBACKWe are highly appreciated to your positive feedback, if you have any problem please contact us before you leave us negative feed back,we'll try our best to help you to solve the problem, pls trust us.3.RETURN POLICYAll items are checked and packed in good condition before dispatch. If you find any defect in our items,please contact customer service within 7days of receipt item.Return items must be NOT-Used or have any sign of abuse or intentional damage.Buyer is responsible for all return shipping charges.In order to avoid the problem that the purchased products are not suitable for your own laptop, please carefully confirm your computer model,accessories specifications and dimensions when purchasing products.