Use a spudger to pry up the retaining plate at the end of the ribbon cable.

The retaining chip may be glued to the motherboard.

Use the spudger to flip up the small retaining flap on the cable's zero insertion force connector.

Make sure you are prying up on the retaining flap, not the connector itself.

Remove the ribbon cable from its port.

No force is needed to plug in or remove the ribbon cable.