By default both HDMI outputs should mirror each other, so HDMI 2 should give the same output as HDMI 1.
If some video settings might have been changed, you may have to set the following.
- Video Monitors: Single
- Video Output HDMI [1,2] MonitorRole: Auto
The OSD should automatically appear on HDMI 2, but if it doesn't, change the following:
- Video OSD Output: Auto -or- 2
HDMI audio is only supported on the HDMI 1 output, so you'll need to use the 3.5mm mini jack.