The motherboard hooks under the clips on the 102 😊 If left on top the case will not close properly.
The 100 and 102 are a breeze to work on compared to the 200. Just getting the screen cable detached is almost impossible, reattaching is a nightmare. There may be a trick but it was beyond me. The bolt lengths for the 200 hinge are slightly different if you get it wrong then the plastic cracks.
