This is brand-new product which can convert round connector to Rectangle connetor.
It is 5.5*2.1mm Round Jack (compatible with most universal AC adapter DC output jack) to Rectangle Plug End (new type) Adapter Pigtail.
There is special IC inside for IBM Lenovo Thinkpad.
It is a special power converter cable for IBM Lenovo ThinkPad Edge Laptop Notebook PC such as X1 Carbon Yoga 13 or other future laptops which DC input port is Rectangle.
You need make sure the AC adapter voltage and current to be same as your original one.
Female: 5.5*2.1mm
Male: Rectangle with Pin
You can connect this adapter between universal AC adapter to latest laptop with Rectangle DC input port
Package Includes:
Convertor Connector 1 pc
5.5mm Round Jack to Square End Adapter Pigtail for IBM Lenovo Thinkpad Ultrabook