4.0X 1.7MM: Compatible with 20V/2.25A, 20V/3.25A, 20V/4.5A Laptops with Lenovo Chromebook N22 N23 N42, IdeaPad, Flex 4-1130, Liteon PA-1450-55LL, Lenovo 5A10H43627, Lenovo ADL45WCC, Lenovo IdeaPad 110-15AST, Lenovo IdeaPad 310-15ISK, Lenovo IdeaPad 120S-14IAP, Lenovo Liteon PA-1450-55LN, Notebooks E41-10, E41-15, GX20K11835, Yoga, Lenovo Flex 4 1470 80SA USB TYPE C PD CONVERTER: With the fast-charging technology, charging your laptop with the USB C PD Charger and cable is easy and efficient, saying good-bye to the traditional laptop adapter. (Need to buy Type C PD Charger and cable separately).