RIBCAGE: YI 4K INSTALLATION GUIDEwww.back-bone.ca | support@back-bone.ca182-8 Place the Assembly Back in the HousingWith the two parts positioned as shown, insert the broad ribbon into the socket on the side of theboard. It’s a little tricky to align the ribbon and socket perfectly – once aligned it’s helpful to wiggle theribbon a little side to side as you push it in. Make sure it’s all the way in and then flip down the lockingtab to hold it in place. You must use a small tool to do that, such as a tiny flat head screw driver. Takecare not to scratch or damage the ribbon or the main board. If needed you can lift the board away fromthe surface of the plate slightly to make more room. Use patience and care with this step.Insert and tighten the remaining screw to hold the main board onto the plate.