Dell Latitude 3300 Owner's Manual page 75

NOTE: It takes some force to push out the keyboard through the two release holes. Exercise due caution.
NOTE: Picture for representational purpose to show exact location of keyboard latches. It is not necessary to remove
the heat sink, hard drive, or system board to access the keyboard release holes.
5 Gently pry up the lower edge of the keyboard from the computer.
Disassembly and reassembly 75