This ECOPMAX PCI slot mounting bracket is specially designed for 3.5 inch HDD and SSD. It is compatible with most mainstream hard drive brands including Samsung, Crucial, Western Digital, Kingston, Seagate and Toshiba. It can be stably installed into the PCI expansion slot of a desktop computer case, effectively saving internal space and securing your hard drive to avoid shaking and damage. Built with heavy-duty metal material, it ensures high stability and long service life. The simple installation design makes it perfect for PC hard drive expansion, DIY assembly and internal hardware management. Note: Hard drive, screws and other accessories are not included.