This product is a USB2.0 compatible terminal that extends digital signal output functions on a personal computer.No power supply from the outside is required due to USB bus power driving.It is equipped with 16 non -insulated open collector output.In addition, the output circuit is a protective circuit (surge protection) and a terminal connector with easy wiring.A Windows driver is attached.- [Extended module] Bus specification USB 2.0 Size Y type Used connector 2X Screw terminal stand 14-pin [Digital input/output] number of input points - Output points 16 points two -way score - Response speed (input) - Response speed (output) 200nsec (max.) Operate voltage (input) - Operate voltage (output) 5VDC-TTL input circuit - Output circuit Non -insulated TTL Open Collector Output (negative theory) Built -in power supply -