4ch serial ports of RS-232C conformity is equipped. Setting a baudrate to 15 - 230,400bps is possible.
It attach a usable driver library same as a COM port of PC main body in Windows. It supports Win32 API communication function by OS standard and MSComm of Visual Basic.
It put a buffer memory of 64byte for exclusive use of the transmission, and for exclusive use of the reception on each channel.
It attach four channel distribution cables (9 pin D-SUB connector x 4) as standard equipment, It prepare 37 pin D-SUB connectors (a male type) for my own cables optionally.
