PowerEdge 3.5-inch Disk Cage for compatible Dell PowerEdge servers. This cage is used for installing 3.5-inch SATA, SAS, or SSD hard drives into hot-swap server bays. It matches the form factor and locking mechanism of Dell PowerEdge for compatible rack and tower chassis, providing tool-less installation and secure retention. The cage typically features a metal frame, a plastic latch/release handle, and cutouts for status indicators. It is intended as a replacement or additional cage for enterprise server environments and is often packaged individually in an anti-static bag.