. . . "With SLOT 2.0 Architecture, the LF50 offers the expandability to run even the most robust software to meet diverse customer needs in such applications as retail, transportation terminals and corporate boardrooms. ?? LF5 Series: Along with Full-HD resolution and a wide viewing angle, the LF5 Series features 500-nit brightness, external control (RS-232C) and VESA mounting and displays crisp, clear i" .