ICY DOCK flexiDOCK MB511SPO-B is the world's first tray-less 2.5 SATA SSD/HDD docking station enclosure for the 12.7mm Slim CD/DVD/Blu-Ray drive bays available on desktops, laptops, and workstation PCs. flexiDOCK makes it easy to expand the capabilities of your system with a second storage device, allowing you to effortlessly install and remove 2.5 HDDs and SSDs without the hassle of trays or screws. We designed the flexiDOCK to give you all the easy hot-swappable convenience of a docking station, with the durability security of a fully enclosed mounting rack.