I took a chance and upgraded to the newer 4.0 bios - now having issues with sleep. Seems to wake after an hour or two - but after longer periods (two or three hours) it will not wake up. Has anyone seen this issue after moving to bios 4? Unfortunately, you can't go back a version.
First sighted on ASRock's limited availability (unfortunately) GPU line, the Phantom Gaming brand has come to motherboards - slowly taking over the performance space within ASRock's lineup. This particular model uses the Intel Z390 chipset - what Z370 should have been, but I digress.