Thinkpad Adattatore Caricatore Rotondo a Quadrato J9K1 ^ι J4W9 O1N9 V7W1 B5H9 R2O2 D C7S2
Convertor Connector 1 pc. You can connect this adapter between old type round jack to latest laptop with square DC input port. It is 7.9mm Round Jack (old type) to Square Plug End (new type) Adapter Pigtail.