Folks trying to connect their iPad pro 12.9 to a Focusrite iTrack Dock might notice that the iPad just won’t fit. No worries! Get your self a nice extension cable like the one shown here. The problem is the adjustable connector on the iTrack Dock does not move up high enough to accommodate the iPad Pro size. This lightning extension cable (6 foot, Black) is for iPhone 7 / 7 Plus / 6 / 6S / SE / iPad Pro, and all Lightning Accessories; Pass video, data, and audio through male to female 8-pin cable.
You can purchase this one from Amazon here on this link