The MCM is capable of RS232 baud rates up to 115,200. Standard selectable baud rates are 110, 300, 600, 1200, 2400, 4800, 9600, 19,200, 38,400, 57,600, and 115,200. 64 Kbaud would not be a valid selection for the MCM Module and, in 35 years in this business, I can't say I have seen a device communicating at that baud rate.