what is the maximum speed for data transfer that can be achieved in RCM4000?

What type of data transfer are you asking about ? Serial? What do you want to do with that data? We need more details

I need to transfer continuous data serially from a computer to the RCM4000 and there should not be any data loss at the RCM4000 side,again,this data is transferred through ethernet interface.I have done it at a baud rate of 600bps,but after that baud rate there is data loss.Please guide me about what has to be done? What is the maximum speed of data transmission in RCM4000?