On the manual:

On a HP 7500 switch, a combo interface is a logical interface that comprises one SFP fiber port and one

RJ-45 copper Ethernet port, which are called combo ports. The two ports share one forwarding interface

and cannot work simultaneously. When you enable the RJ-45 port, the SFP port is automatically disabled

and placed in the inactive state, and vice versa. By default, the port with a smaller number is active.

You can use the display port combo command to identify the combo interfaces on the switch and the

active status of their member ports.

Same on HP 5500.

I suspect that is not configurable, because the both port number are printed on SPF port:

Em 22/05/2023 10:48, Morten Brekkevold escreveu:

On Thu, 11 May 2023 21:15:05 -0300 Marcos Tadeu <marcos@telecom.uff.br> wrote:

The  combo-group creates an "port backup".
How to see it on NAV ?

I have no idea, having no experience with Arista.  What is a "combo
group"? Is an LACP aggregate?