Model ATX-6822 Dimension:185*408*418mm SECC rolled steel Front USB+Audio port Colors option 4 CD-ROM bay,1 FDD bay,2 HDD Bay (can extend to 5 HDD bay） Compatible with full ATX M/B、MICRO ATX M/B and FLEX ATX M/B (assembly big size ATX M/B with 2 CD-ROM bays available) Edge folded techniques and hands-protection design INTEL thermally advantaged chassis design, three 8cm cooling fans optional with enough air duct hole for air convection and thermal dispersion FCC-B design and EMI free Firm and solid metal structure,maximum load on top cover at 80KG CD-ROM bay tool free design,HDD bay screwless side-drawn design(patent),both convenient for DIY and system-builder Handy screws for side panel Loading:1250pcs per 40HQ container