1, 5 wire Dual 232 and USB controller 2, Fully compatible with ELO 2216C(Dual) controller. 3, Use ELO driver and Leadingtouch ... LeadingTouch 5020D, the newest controller supplied by Leadingtouch, ... resistive touch product and fully compatible with ELO 2216C(Dual) controller.5020D providing Comb interface for both RS232 and ...