Designed specifically for the DB4, the optical drive kit adds support for a slim slot-loading drive to the DB4.
The kit included an optical drive tray that allows the drive to be mounted to the back of the motherboard tray and an acrylic top panel with a slot cutout for access to the drive.
Drives that have a mechanical eject button can be operated by pushing in the center of the top panel.
For full information, please visit the main product page here - https://streacom.com/products/db4-optical-drive-kit/