Lenovo 01FR035 is a mains adapter for powering laptops. Listed as model ADLX45DLC3A, it is described as an IBM/Lenovo desktop power supply.
It delivers 20 V DC at up to 2.25 A, with maximum output of 45 W. The 100–240 V AC input supports mains supplies within that range.
The black adapter has an IBM/Lenovo square output plug and a C8 AC socket. It is intended for Lenovo laptops with that square connector and matching electrical requirements; the C8 socket is the mains-side connection.
The listing states that a power cable is not included.