T-5K35T-SA is a combo drive cage that takes a standard 5.25" drive space to give one slim optical drive bay and one 3.5" hotswappable SATA drive bay. This device provides flexibility to fully utilize your system chassis. - Stainless steel material to avoid rust problem after use - High performance transfer rate up to 6.0 Gb/s - 3.5" hotswappable and trayless drive bay with key lock - Supports SATA I/II/III 6.0 Gb/s hard drive - Anti-vibration silicon rubbers on both sides of rack to absorb vibration and resonance - Constructed with metal body, plastic ABS front panel, and metal latch for heavy use