Sony PCV-LX920 - Manual (Page 56)

VAIO Slimtop System Reference Manual 44
Removing a Slot Cover
You remove a slot cover when you install an add-in card that occupies a
previously-empty slot.
1
Lay the system on its side with the open side facing up and the slot
covers facing you.
2
Locate the slot of the cover you want to remove.
3
Remove the screw from the slot cover, and set it aside for future use.
4
Carefully remove the loose slot cover, and set it aside for future use.