Yes, the Promise Utility will manage and monitor both internal and external Pegasus. You can navigate across the respective Pegasus device. Here is how:

Please download the utility from the Promise website here

Follow the steps below to manage your Pegasas systems. 

Once installed on your macOS, open the Pegasus utility. 

Once opened the Promise Utility dashboard will present one of the Pegasus systems. In the picture below the Pegasus R4i is device opened.

To manage your other Pegasus devices, with the utility open proceed to the top left bar and click on view, and then select your devices listed in the drop down. 

Select the device you wish to manage and it will open a new window.