what spare part do I need to order?

Hi All,

After upgrading my Endurace CF SL7 from 105 mechanical to Ultegra Di2 I have an "uncovered" port.

Can you help me to find out which spare part do I need to order to "plug in" the upper port?

Is it E237-15 Blind Plug which is part of GP7037-01 Cable Routing Kit?

Thanks for your help guys 🙂