... earphone amplifierand a common buffer. 5. a USB host interface,driver IC is CH376.CH376 is file manage and controll IC ... inside) 8. a CAN communications interface, driver IC is SN65VHD230 9. a RS485 communications interface,driver IC is SP3485 10. two RS232 ... 1x serial Cable1x Cross Network Cable1x 5V1A power adapter 1x CD ROM(content software,schematic,routines,drives,documents) Product Image: