The Apple AirPort Express A1264 is not straightforward to configure for gear interconnection because it does not have a LAN port, nor the ability to create a local network, it just has a single WAN port.
I have a couple of those that stopped being useful or fully functional quite a few years ago, long before the X32 was introduced.
The 'newer' A1392 version is a better choice because it has an independent switched LAN port.
That is the only version I have ever configured for use with the X/M 32 /XAir mixers. Everything I've ever said about this subject is about that one.
It, too, is no longer made but you can still exorbitantly buy refurbs on Amazon, which I haven't done. The ones I have are still working adequately.
