Dell Latitude E6400 ATG Semi-Rugged Laptop Backlit LED displays offer optional touch-screen capabilities or brightness up to 750 nits (typical) for outdoor use in bright sunlight Removable port cover for the rear, bottom, and side ports to help protect against dust ingress Backlit keyboard for illumination in dark settings Spill-resistant input surface for protection in a variety of field environment High-durability textured paint for additional protection from scratches and physical wear