Jrifedptry 3.5 Inch HDD Cage Rack - Black&Silver Metal - Holds 3x 3.5" HDDs - USB Interface - PC Compatible

3. Please pay attention to the size of the cage and make sure there is enough room for it in your PC case. 4. Some PC Chassis may not support this Hard Drive Rack. 2. It fits for PC Case which CD-ROM Slot Inwall is flat, or Bracket Installation Type CD-ROM Slot. 1. HDD Hard Drive Rack. Holding 3x 3.5inch Hard Drive Size let you extend 3 Hard Drive easily(2 CD-ROM drive positions)! 5. Note: if you want to drag the CD-ROM in the case with 2 CD-ROM positions, you need to flatten the small iron sheet before installing it.