Supported host interfaces, USB, RS232, keyboard interface, TGCS (IBM) 46XX over RS485, keyboard support, supporting over 90 international keyboards, user indicator, good decoding LED light, rear view LED light, buzzer (adjustable tone and volume), image sensor 1280 x 800 pixels, drop specifications, sturdy and reliable design, able to withstand multiple impacts from 5.0 feet/1.5 meters to concrete floors, designed to withstand 1000 rolls from a height of 1.5 feet/0.5 meters