After unboxing the motherboard, @wooka found out that the motherboard had a bend near SATA ports and there was a tiny chipping at the corresponding corner too.
The mobo came as is from RMA (most likely) and I wasn't vigilant enough to check. Hence as per mutual agreement, I am getting the mobo shipped back to Inspirisys for another replacement and have refunded the full amount to wooka.
Deal closed. I may post the same motherboard after I receive replacement. Till then, mods can close the thread.