The ToughArmor MB839SP-B is a robust removable frame for a 2.5 inch SATA hard drive or SSD (9.5 mm height). By using a conventional PCIe 2.0 interface and a flat design that uses only one PCIe expansion slot, the MB839SP-B allows you to add a hot swap bay for an HDD or SSD even if the computer has no free SATA port or drive bay. As the PCIe connection allows both power and data transfer, no additional data or power cables are required. In addition, hot swap is optimally supported by the tray design. MB839SP-B provides full hot swap functionality via the PCIe 2.0/3.0 interface and allows you to change drives in seconds without having to shut down your system or open the PC case. Hot-swap support prevents downtime when upgrading your mass storage or replacing a defective drive. Even IT technicians can work more efficiently. A hot-swap SATA port for 10,000 plug-in cycles allows drives to be changed frequently and regularly. Add an extra hard drive or SSD to your computer by using it unused PCIe slots. This allows you to bypass limitation of your computer and install an additional drive bay. The use of the PCIe 2.0 interface allows a huge speed jump on old PCs and Mac Pro 2008-2012 models that only support SATA II speeds. So you get the full benefit from modern SSDs. The use of the PCIe 2.0 interface allows data transfer and power connection without additional cables, ensuring a tidy PC case.