20V 2A 40W AC Adapter Charger For ADVENT 4211 4211B 4211C Series EU 
Features:
Brand new! 100% Tested and Guaranteed working in good condition!
Quality: High Efficiency, High Reliability
Version: EU
Input: 100-220V
Output: 20V 2A 40W
Connecter Size: 5.5mm*2.5mm
Part Number: 41R4441, 41R4449, 41R4451, 41R4450, 41R4452, 41R4445, 41R4446, 41R4447, 45K2200, ADP-40MH BD, 0225A2040
Compatible Model:
Advent 4211 Series 4211B, 4211C
Advent 4212 Series
Advent 4213 Series
Advent 4489 Series
Advent 4490 Series
Lenovo Ideapad S10 Series S10e
Lenovo Ideapad S9 Series S9e
MSI Wind U100 Series U100X
MSI Wind U115 Series
MSI Wind U120 Series U120H
MSI Wind U90 Series U90X

If you are looking for a new adapter, you should check the following:
1. Your new adapter must have exactly the same plug (adapter tip) as the original one.
2. The output voltage must be the same, the amperage could be the same or a little higher than on the original power adapter. For example, if my laptop requires 19v-3.42A adapter, I can safely use 19v-3.95A adapter.
3. Polarity on the new adapter’s plug must be the same as on the original one.

If there any question or problem, please feel free to contact us. It will be a great honour if we can help you, wish you a happy shopping! Many thanks!