I've installed a GA-H61M-D2H-USB3, and installed W7 Professional.
I've installed all drivers, included audio.
When I plug speakers to rear connector, driver detect it and I can hear the sound.
But not the same with front connector. I've tested chasis front panel audio with another Mobo and it works well.
I think chasis FP_Audio is an AC'97 one, and Mobo FP_Audio connector is configured as HD Audio, but I cannot found any physical swtich and not BIOS field when I could change it.