the unstripped ide cable connector attaches at the 40-pin connector (black) on the left side of such a board. the extension cables are connected to the green screw terminal at the right side.
I thought you had terminal blocks similar to those that are green in the linked product. What I was saying is that you can use the terminal blocks you have to build a board such as the one in the link. You would need additonal parts: stripboard, some header pins, and some jumper wire.