I've recently bought the Seagate 3TB HDD for my PC with the Gigabyte EX58-UD3R motherboard. However after plugging in the power and SATA cable there seems to be no obvious method of connecting it. I've gone into the BIOS but there seems to be no clear way of adding it. I've tested the cables by replacing the cables plugged in to my other Seagate 1TB HDD that I've had in there for years but still no success. I can confirm that the HDD is receiving power as it definitely spinning when powered on. I feel I'm missing something obvious here, my last dealings with storage was installing my 64GB SSD to run Windows on, so I don't feel I'm a complete novice here. Any help please?