5.5 x 2.5mm Female Power Plug Charger Converter Cable Adapter for Lenovo ThinkPad

Features:

You can connect this adapter between old type round jack to latest laptop with square DC input port.
Easy plug and use.
5.5 x 2.5mm female round jack can fit most of the universal AC adapter DC output jack

Specificaitons:

Product Name: Converter Cable
Jack Dimension: 5.5 x 2.5mm
Dimension: 47 x 16 x 10mm
Cover Material: Plastic
Design For: New Generation of the IBM/Lenovo/Thinkpad laptop.

Package included:

1 x Laptop Power Converter Cable Adapter