Yes, Samsung SSDs are backward compatible with SATA 3Gb/s (SATA II). and SATA 1.5Gb/s (SATA I). However, we do not recommend the usage in the condition of SATA 3Gb/s (SATA II) or SATA 1.5Gb/s (SATA I). If you are seeking the maximum performance, you may want to consider upgrading the motherboard on your system.