Got a Crucial M4 connected to a Gigabyte GA-MA785G-UD3H motherboard and I just noticed the SSD might be running in SATA 3 mode. According to POST, it shows the SSD as 1.5G compatibility while the HDD is 3G compatibility. I swapped ports and cables but no luck. The BIOS is the latest beta BIOS and the firmware on the Crucial M4 is the latest one as well. I've checked the BIOS settings as well and there is no switching between SATA the different SATA standards either.