Universal 9.5mm SATA 3.0 2.5" SSD HDD Caddy made of aluminum and plastic Case: New and superior quality Caddy for 9.5 mm and 12.7 mm hard drives Support for SSDs and 2.5" 7mm and 9.5mm SATA HDDs Support for SATA III, SATA II, and SATA I, with a maximum speed of 6 Gbps; Using Hot Swapping As an upgrade, consider replacing your optical drive SuperDrive (DVD/CD-ROM) with a second SATA HDD or SSD.