Safety: UL Listed. This item is up to UL's nationally recognized standards for high-level electronic safety Fit for Lenovo laptops (230W, Slim tip Connector), Fit for Lenovo Legion 5 5-15 5-16 5-17 5P-15 5P-16 7-15 7-16 S7 Y540 Y545 Y740 Y900 Y910 Y920 Y7000, Fit for Thinkpad P71 P72 P73 P53 P15 P16 P17 P1 X1 Extreme, LOQ 15 16, Fit for Yoga laptops with Slim tip Connector