Hi, I bought a second hand Elinchrom lighting kit with 2 400w lights and a skyport. The skyport does not have a foot as all those I see on internet have - its just a little box with a sync cord place (that is missing!) What do I need to buy to get my system working? (I am nervous to buy a sync cord and then the set up still does not work.) Anyone with knowledge on this rype of Skyport?