1. Pre-drilled holes for cable management to reduce cable mess. 2. Supports internal 2x3.5"HDD and3x2.5"HDD/SSD. 3. Supports high-end graphic cardsup to 320mm. 4. Supports both Mini ITX and Micro ATX motherboard. 5. PSU dust filter can be easily removed for cleaning. 6. Shock-proof rubber pads for 3.5"/2.5” HDDs. 7. 1 X USB3.0 / 2x USB2.0/ HD Audio & MIC.