The Lenovo PA-1450-55LU AC adapter, part number 01FR124, supplies power to a compatible laptop. The exact code distinguishes it from the nearby PA-1450-55LZ variant, part number 01FR125.
Its output is 20 V at 2.25 A, with a rated power of 45 W. A round-tip connector provides the connection to the laptop. These details help identify the adapter and check that its stated output matches the intended laptop power setup.
Designed as a laptop charger, it provides operating power to a compatible laptop. The description is specific to the PA-1450-55LU and its listed electrical ratings; compatibility beyond the stated use is not specified.