SATA Level Support
Does my Samsung SSD support SATA 3Gb/s (SATA II) or SATA 1.5Gb/s (SATA I)?
Yes. Samsung SSDs are backwards compatible with SATA 3Gb/s (SATA II) and SATA 1.5Gb/s (SATA I).
But, Samsung does not recommend the use of SATA 3Gb/s (SATA II) and SATA 1.5Gb/s (SATA I).
If you are seeking maximum performance, it may be better to consider upgrading your motherboard.