First you need to understand which major driver release your interface represents:
For interface v2.3.0 - v2.5.0 and higher, you should have the following interface:
In this case, you can view the current firmware version on the panel "Overall Stats-> About system" or on the panel "System Menu->About".
For v2.0.1 - v2.2.5 (old), you should have the following interface:
In this case, please read documentation at the following link.
For 1.3.17 - 1.3.6 (old), you should have the following interface:
In this case, please read documentation at the following link.