Slide-in/out M/B Base: for easy assembly and maintenance. Compatible with ATX, microATX & Baby AT formats Screwless & Wireless Front Panel: Snap-in/out front panel for easy installation to enhance after-sales-service. Three-piece-cover unit: The side-opening design to offer less damage upon installation. Better Ventilation for System: The side covers with vent holes much improve the ventilation of the case. No Hand Cutting: All beveled metal edges to prevent injury. Detachable 3.5" FDD/HDD Bracket: Offer better solution for assembly & maintenance Two Optional Spaces for the Second Fan: Compatible with 6 cm or 8cm/9cm. No Need EMI Clips: Advance EMI structure is offered. Do not need to put EMI Clips to shorten your assembling time. Stand-Off metal: Fix the M/B with stand-off metals instead of brass screws to save your assembling time on M/B.