Safety: UL Listed. This item is up to UL's nationally recognized standards for high-level electronic safety. Fit for Lenovo Thinkbook 13s 14s 14 13 13s-IWL 14s-IWL 14-IML 15-IML 14-IIL 15-IIL 20R9 20RM 20RV 20RW 20SM 20SL Laptop.[Do not buy if your laptop requires more than 3.25A].