I have Radio Panel, Multi Panel, 4 FIP’s and works perfect on MSFS2020 with SPAD.NeXt.
In other words, those Saitek devices do not work without SPAD.NeXt.
Also, make sure to use bus-powered USB hub for FIPs, because FIP is very power-hungry.
Also, as SPAD.NeXt says, “Do not Install any Saitek-drivers unless SPAD.NeXt asks you to do so.”
Also, Saitek Multi Panel has problems with “Windows 10 Enhanced Power Management” but SPAD.Next also takes care of that. (Otherwise you have to work on Registry Editor on your own.)
Another big reason I recommend SPAD.NeXt is that it supports FIPGAUGES.
As you see, Saitek’s original Instrument panel designs are “too plain”, because they stopped development 10 years ago.
FIP is a very expensive device (around $200!) so in order not to waste your investment, please use them with SPAD.NeXt and make it better with FIPGAUGES.
Happy Flying!