-3.0mm diamond-cut and hair-brushed aluminum
-First micro dust filter removable at front
-2 aluminum CD-ROM flip covers integrated
-2 x USB, Audio I/O on-top for the easiest access
-Tool-free drive bays and removable HDD cage
-12cm fan slots in front and rear for silent cooling
-Next generation external SATA port on top (optional)
-Intel CAG v1.1 Air Duct(ECA3090, ECA3091)
-12cm blue LED fan in front included (ECA3090, ECA3091)
-See-through side panel (ECA3091)
-25cm monster fan with airflow direction change for supreme cooling (ECA3092)