I had the opportunity to test three Creative Sound Blaster USB sound cards with ubuntu MATE 16.04.5 LTS PowerPC on my X5000. All USB sound cards work without any problems with the latest kernels. I tested the following Creative USB sound cards:
- Creative Sound Blaster iRoar Go
- Creative Sound Blaster FRee
- Creative Sound Blaster Play! 2
Cheers,
Christian