if its the white thing that your on about it looks like the connector where the eye wire goes in. If you dont know what an eye wire looks like pic is attatched.
From the incredibly clear pic (your a professional right?) i would concur with DS. That looks entirely like a flash port for upgrades. Looks kinda like the old one on my timmy.
That is the Port for the Equalink cable.
It's so you can Adjust your WAS board without having to scroll the menus.
Also can be used for updating software on the board which you can download for the Wicked Air Sports site.
not 100% but for my old cocker it was £30 plus the p+p but there might be someone close to you and would be worth it for a working gun if nothing else there must be a timmey tech nearby who you can just talk to