AS he said, emanager and Network emanager were made to be backwards ompatable and will connect to older software version of CTX.

But if you have a very old software version, like version 1.X, then I found it could give you some error messages at times. It will still connect and my be fine for what yhou need it to do.

Not any good way to tell what version you are running by looking at it. All older processors can be upgraded to version 3.10.