S5 95U Part Numbers

Hi

I have an S5 95U 8MC01

Could anyone tell me what the difference is in the part numbers

MA, MB, MD and then 01,02,03,04 ??

Just a wild guess.....

MA = no additional interface
MB = with PROFIBUS-FMA interface
MC = with 2nd serial interface
MD = with PROFIBUS-DP slave interface
ME = with PROFIBUS-DP master interface

01 - 0 = release/revision number

Kev, Thankyou