I put headset and mic to top plugs and left speakers plugged in rear port as normal. On power up and login I heard only output from headphones. Nothing at all from speakers. Here is some more information:
Update: 
Plugged in Headset and mic and heard login sounds at login from them ONLY. 
Under Sounds->Playback Speakers (Realtek HD Audio) enabled and default device 
Realtek HD Audio 2nd Output unchecked (headphoness) at this time (was before and both showed green checkmarks
 Realtek Digital Output ready but unchecked 
Realtek Digital Output (Optical) ready but unchecked 
Recording I see: 
Mic in at Front panel (pink) 
Stereo Mix (Realtek HD Audio Ready) 
Sounds: I hear nothing from rear speakers 
Communication: 
Do nothing is checked 
Sounds -> Recording: 
StereoMix default communications device 
Properties Enhancement Immediate mode checked, disable all sound effects unchecked, dc cancellation checked
 Advanced: 2 channel 16bit 44100hz CD quality (tried all ranges for playback - no output
 Allow applications to take exclusive control - checked 
Give exclusive mode apps priority - checked 
Realtek HD Manager 
Left box - Speakers, then HD Audio 2nd Input, then other 2 Digitals, Stereo Mix and Mic in at Front Panel (pink)
 Speaker is Blue (no red circle w/line through it) 
Speaker configuration - Stereo 
Full Range and Surround - unchecked 
Device advanced settings: 
Make front and rear output devices playback two different audio streams - checked
 Recording device: 
Separate all input jacks as independent input devices 
Information: 
Audio driver version: 6.0.1.6449 (latest from Gigabyte site for Realtek) 
Directx Version: DirectX 11.0 
Audio Controller: HD Audio 
Audio Codec: ALC889 
Display icon in notification area - checked 
What next?