Originally Posted by hotleadsingerguy
Actually that slot isn't for a cable. That slot is for the lid to center and to keep the hinge safe (to keep it centered).
When you close the lid a plastic "tooth" drops down into that groove and goes all the way to the bottom. The better part is the corners of the lid don't close tightly, so I just leave the cable sitting on the corner when I close the lid.
Noticed that as well but there's not even a mark on my iPod cable where I've closed it in the groove, so I usually just do that anyway.