Ok, My mobo has 2x SATA3 ports and 4x SATA2 ports. I have an SSD(SATA3) and a 1TB Seagate Barracuda HD(SATA3) taking up both SATA3 ports leaving the 4 SATA2 ports unused. I just purchased a new 2TB Seagate barracuda HD(also SATA3) but I want to move everything from my 1TB HD to my 2TB HD and have them switch places as well so that my 2TB takes up one SATA3 port and my 1TB moves down to a SATA2 port . I understand that SATA, SATA2, and SATA3 are all compatible with each other but im not sure if I can just move my 1TB SATA3 hd from a SATA3 port to a SATA2 port without having to do anything afterwards like formatting or what not or if there are gonna be any problems with doing this? I don't know, I'm still an amateur pc enthusiast. Thanks for any help.