I just built a new PC with an Asrock B450 Pro4, a Ryzen 3600 and a GTX 1660ti in an Antec DF500 case. The rear audio is working, however the front panel audio jacks are not. The HDAudio connector is seated properly, and I have updated to the latest realtek drivers and the realtek manager UWP app from the Asrock page. HD audio is also enabled in the BIOS. The rest of the two USB ports on the front panel are working, however I get nothing from the audio jacks.