@Crenshawdk were there any changes in PCIE specification ? Maybe some mobo restrictions...I dont't know....I thougt always if there is free PCIE slot there shouldn't be any restriction to put there...

@Solla-topee Short summary ...I got the card to work. Why does the card not work in all PCIE slots (X1/X4/X8 in my case X8) ? Why card was detected and shown in device manager list with exclamation...

@Solla-topee Hallo, I've tried this driver yesterday but without success ...same Error (Code 10) and as I wrote WIFI Card is placed in PCIE Slot described as PCIE X4 on MoBo:

I've put it into PCIE X4 Slot on my Gigabyte GA-Z77MX-D3h with Xeon Prozessor and the card doesn't work on my system I've got error Code 10... Earlier I haven't any troubles with hardware...