1. Installing Internal Optional DevicesExpress5800/GT110e-S User’s Guide94Chapter 2 Preparations1.12.1 Installing an expansion 2.5-inch HDD cageFor 2.5-inch Hard Disk Drive models, you can install an additional two Hard Disk Drives by using a 2.5-inchHDD cage.Tips An expansion 2.5-inch HDD cage is only supported by air-cooled models.Install the 2.5-inch HDD cage for additional drives by using the following procedure.1. Refer to Chapter 2 (1.3 Overview of Installation and Removal) for preparations.2. Remove the side cover and front bezel while referring to Chapter 2 (1.4 Removing the Side Cover and1.5 Removing the Front Bezel).3. Pull the dummy cover toward you while pressingthe tab on the right.4. Remove the two screws from the blank cover.5. Remove the two screws from the dummy cover anddetach the rails.6. Attach the rails you removed in step 5 to the HDDcage. Use the screws you removed from thedummy cover.Important Keep the removed dummy cover for future use.