One 3.5” HDD or Dual 2.5” HDD/SSD. Fits 5.25” bay for PC case. 3.5” HDD Bracket or Dual 2.5” HDD/SSD Bracket for 5.25” Bay. Detachable Front Inner Panel, open for 3.5” devices ( Internal Card Reader, Floppy drive…) Maximize the usage on your desktop PC case, excellent for space saving Easy installation; Easy connection. Overall Dimension : 149 x 165 x 42 mm Material : ABS Package detail : 80 CM shielded Fits 5.25” bay for PC case