Hi, I have a mid 2009 Macbook Pro. Yesterday, I removed the RAM and noticed that I accidentally have also removed a rubber protective pad (located on top the 42/31 ribbon cable). The ribbon was not inserted correctly in its socket so I put it back. Since then, however, I have IO disk Error every 5 minutes (the computer freezes). I am pretty sure that the ribbon seats correctly in his socket. But I do not know if it is still the case on the other side. My questions ? - what is the purpose of this connector ? - How difficult is it to remove the motherboard to access the other side ? Thanks !!!