Putting the old drive into its proper place and fitting the antenna plate correctly are the two most difficult actions if you follow the instructions. An easier way is to remove the two tabs (bolts) at the rear end of the old drive (since they just cause trouble) and affix the drive to the antenna plate. THEN attach the antenna cable to its receptacle (very difficult) and insert the plate with drive attached into the computer. When the whole assembly is in place and bolted in place, it is easy to connect the drive cable to the motherboard. By this method, the drive has no chance of snagging.