HW Revision B: M3001 A #AO1 with S/N DE512xxxx M3001A #A02 with S/N DE512xxxx HW Revision C M3001A #A01 and #A02 with S/N DE610xxxx With Sp)2 Firmware (Fw) Rev.: Sp02 DSP FW-Rev: A.01.41 or A.01.42
FM20, FM30, FM40, FM50 | M2702A/M2703A units manufactured and shipped from 07/01/2005 through 09/04/2009, and M2704A/M2705A units manufactured and shipped from 12/01/2007 through 09/04/2009