UseThe StarTech 4 Bay Aluminum Trayless Hot Swap Mobile Rack Backplane is a durable and convenient storage solution for 3.5" HDDs. With a sleek design and compact dimensions of 6.5" x 10.05" x 7", this case/enclosure is perfect for on-the-go use. The trayless design allows for easy insert and removal of drives, while the SAS and SATA III interfaces ensure fast and efficient data transfer. Made by the trusted brand StarTech and sourced from China, this mobile rack backplane is a reliable choice for storing and accessing your hard drives