Acer Aspire TimelineU M5-481TG-6814 Ultrabook
(click on the pictures to enlarge them)
Note: if you are just installing ram and not replacing the hard drive then you do not need to disconnect the keyboard. The picture below shows the keyboard disconnected. The cables have small latches that release them and they pull out nice and easy. If it isn't coming out, you haven't undone the latch.
6.The small ribbon on top of the hard drive is attached by some stickyness and can be removed. Along with that are two small screws again holding the small metal mount to the hard drive. It bends easy so be careful with it. Make sure you have the right fitting screw driver for these two screws, as they are torqued pretty good and the head will strip if you don't.