Ok well, don't be too worried about it. Sometimes it's a hit and miss with certain motherboards....more likely than not your motherboard should be fine.
I've read a few threads where their Asrock E4G3 is completely stable - and OC's well. But like I said - it can be a hit and miss with these "cheaper" type of motherboards.
If problems do arise once you get it...well you could probably just ask someone here for help.
Let us know how it goes once you receive it.