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original 20V 4.5A AC Adapter Laptop Charger For Lenovo Thinkpad E420 E430c E545 E425 B480 B490 T420 T430 V480 V580 SL410 T510 - AliExpress
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Amazon.com: AC Adapter 90W 20V 4.5A Laptop Charger for Lenovo ThinkPad X1 Carbon T440 E431 G410 45N0237 45N0236 45N0239 344428U ThinkPad T431s Z510 PA-1900-081 0B46994 0B46995 Yoga 11s Flex 14 15D Power
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Source 90W 20V 4.5A USB/Square Tip For Lenovo laptop charger adapter Z510 Z710 Z410 on m.alibaba.com
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