OWC Slim Optical Drive Enclosure Kit with USB... at MacSales.com
5.25" Bay Drive Adapter for Slim Optical Drive and Trayless Caddy for 2.5" SATA III HDD/
Drives Adapter/Cage to mount 1 x Slim FDD and 1 x Slim CD-ROM drive into any exposed 5.25" standard drive bay, Model#EJ-FM05
Amazon.com: Syba 5.25" Bay Adapter for Slim Optical Drive, 2.5" Trayless Rack for Hard Drives HDD SSD, USB Hub - SY-MRA55005
Fit a slim CD ROM and a 3.5" HDD in a 5.25" exposed bay: Server Case
MB732SPO-B_2x2.5" SAS/SATA HDD/SSD Mobile Rack + Ultra Slim/Slim Optical Drive Slot for 5.25 Bay
Amazon.com: Cinolink 5.25 to 3.5 Drive Bay Adapter HDD SSD Mounting Bracket 5.25 inch to 2.5 or 3.5 Inch Internal Hard Disk Drive Mounting Kit with Screws and Shock Absorption Rubber Washer- Black : Electronics
slim optical drive" 3D Models to Print - yeggi
iStarUSA T-5K25TU-SA Trayless 5.25-Inch to Slim ODD and 2.5-Inch w/ USB 3.0