Label     DIN  DOUT(1)   0-10V_In  4-20mA_Out     Steppers  Tones     DC_Mtr
-----     ---  ---       --------  -------        ------    -----     -----
I/O-0     yes  yes                 yes(2)
I/O-1     yes  yes
I/O-2     yes  yes
I/O-3     yes  yes
I/O-4     yes  yes                                          yes       yes
I/O-5     yes  yes                                          yes       yes
DI-6      yes
DI-7      yes
DI-8      yes
A-9       yes            yes
A-10      yes            yes
A-11      yes            yes
A-12      yes            yes
M-0                                               yes(3)
M-1                                               yes(3)
M-2                                               yes(3)
M-3                                               yes(3)
CCIO-8(4) yes  yes

Note 1: All digital outputs are PWM capable, except for those on the CCIO-8 expansion board.
Note 2: This output can also provide 0-20mA, which is less commonly used.
Note 3: Each motor connector has 3 digital outputs (step, dir, enable) and 1 digital input.
Note 4: There are 8 of these I/O points on the CCIO-8 expansion module.

Note 5: Note that there are 3 comm ports:
     ClearCore lib name  Arduino name
     ------------------  ------------
     ConnectorUsb        Serial
     ConnectorCOM0       Serial1
     ConnectorCOM1       Serial2
