|This is a closer view of the 5.25-inch drive cage. The cage holds up to two 5.25-inch drives, such as optical drives.
Each bay has its own sliding lock lever. Push the sliding lock lever toward the front of the case to lock the drive in the bay. Push the sliding lock lever toward the rear of the case to remove a drive from the cage.
For added security, a thumbscrew (circled in the graphic) can be placed in the hole in the lower-left corner of each bay when in the locked position.