Do you need "Rev 1.0" or "Rev 2.0" software downloads? Read this to find out.
If the System Software of your device starts with 40.32.xxxxx (or ESS 040.032.xxxxx) then download files with REV 1.0 in the name.
If the System Software of your device starts with 40.33.xxxxx (or ESS 040.033.xxxxx) then download files with REV 2.0 in the name. Instructions on how to find the WorkCentre 7655/7665/7675 device Software version.