The previous two red ports have been changed into four but remain the functions. Also, PORT5 is isolated only with serial communication function. So it can't be used to update program and is only for communication. Also, it is compatible with USB serial port. PORT6 to PORT10 are compatible with dual-digital, simulation, I2C bus, unibus, and simulated serial port. Me Auriga has encoder motor port, smart servo port and LED Ring Panel port (with power switch). Besides, the PCB is also enlarged.