LCD Back Cover (A-Cover): The top lid that protects the back of your screen. Front Bezel (B-Cover): The plastic or aluminum frame that surrounds the physical screen.Palmrest / Upper Case (C-Cover): The area where you rest your hands, which houses the keyboard and touchpad. Bottom Base / Lower Case (D-Cover): The bottom shell that protects the motherboard, battery, and internal components.
LCD Back Cover (A-Cover): The top lid that protects the back of your screen. Front Bezel (B-Cover): The plastic or aluminum frame that surrounds the physical screen.Palmrest / Upper Case (C-Cover): The area where you rest your hands, which houses the keyboard and touchpad. Bottom Base / Lower Case (D-Cover): The bottom shell that protects the motherboard, battery, and internal components.