S.M.S.L M2 6th Anniversary Audio DAC connected to Thin Client HP T520 detected correctly. Works without problems. USB 2.0 asynchronous mode.
ESS ES9023 (Sabre) - Saviaudio SA9027 - MAXIM MAX9722
Thin Client HP T520 - AMD GX-212JC - 2 GB RAM - 16 GB SSD
Please add to the list of working DAC Audio S.M.S.L
SMSL M2 - Jack 3.5 line audio output to Harman Kardon HK 620.