MSAM 1 versus MSAM 2

What are the major differences betweem an MSAM Version 1 and an MSAM Version 2?

There are some testing options that are only available on the Version 2 MSAM but the major physical differences are the ability to option the unit for dual 10G testing and support for the SFP+ optics via the SFP+ PIM module. The Version 2 MSAM also adds a USB connector to the MSAM to be able to attach the USB headset directly to the MSAM for voice applications.