If you have a Sata III 6 GB port use that or you can use the Sata II 3GB port, it will work in either one of them.
After you have installed your SSD, when you are in windows 7, make sure you enable SATA trim so the SSD can have a longer life span.
Here are common SSD questions and knowledge:
How to enable AHCI in Windows 7 after Installation:
There is one way to fix this, although you need to have knowledge of registry editing. The detailed steps from Microsoft are as follows:
1.Exit all Windows-based programs.
2.Click Start, type regedit in the Start Search box, and then press ENTER.
3.If you receive the User Account Control dialog box, click Continue.
4.Locate and then click the following registry subkey:
5.In the right pane, right-click Start in the Name column, and then click Modify.
6.In the Value data box, type 0, and then click OK.
7.On the File menu, click Exit to close Registry Editor.
After this you’ll have to restart your computer, go to BIOS and enable AHCI. When you log in to Windows again, you’ll notice the installation of drivers for AHCI. Another restart will be required to finish the driver installation.
These steps are provided at your own risk and not suggested unless you know and understand the risks. You will want to make sure the controller driver and MB BIOS support this option before you enable it