Super Power Supply&reg; AC / DC Laptop Adapter Charger Cord Replacement for Lenovo Thinkpad L430 L530 T400 T420 T420s T430 T430s T520 T530 T430u Ultrabook ; Thinkpad Edge E430 E430c E520 E530 E530c E535 E545; Twist S230u; Lenovo B590 Ultrabook Tablet Pc 90 Watt Netbook Notebook Battery Plug Input: 110-220V Output: 20V 4.5A 90W Warranty: 1 Year Super Power Supply are manufactured and tested to match or exceed OEM products. Trademarked by Super Power Supply. Sold exclusively by Super Power Supply