I ordered the power jack connector cable for my laptop Dell Inspiron 14-7437 here:...

hey, I think it is hard to find this input power jack board for Sony Vaio Duo 11, I found someone is selling the input jack, you will need to solder it to the original board, check this page: http://www.dcincable.com/sony-vaio-duo-ultrabook-11-svd112-series-ac-dc-power-jack-socket-connector-input-charging-plug-port-p-5558.html