The full tower Obsidian case for great-looking high performance PCs The Obsidian Series 750D full tower PC case combines generous expansion flexibility room for advanced cooling options & an interior thats optimized for fast & easy builds & upgrades. It has a clean elegant exterior that dispenses with arbitrary plastic add-ons in exchange for the beauty of brushed aluminum & solid steel. This rigid rugged exterior surrounds a frame that has ample room for high-performance components & the sophisticated cooling youll need if youre going to push those components to their limits. & it incorporates a host of clever system builder-focused features because building a system should be straightforward trouble-free & even fun The room you need when youre getting serious. Nine PCI-E expansion slots support double & triple GPUs. Theres room for up to ten drives & four USB (Universal Serial Bus) ports on the brushed aluminum front panel. Your system. Your cooling. The three included Corsair AF140L high-airflow 140mm intake & exhaust fans are custom engineered to deliver excellent airflow with less unnecessary turbulence & noise. You can mount up to eight fans with room for dual radiators on the bottom front & top. Take control of your storage. There are four separate mounting locations for the drive cages & if youre moving to 100% solid-state you can remove the 3.5" cages entirely & use the four side-mounted 2.5" cages Designed for fast straightforward builds The side panels & expansion slots use thumb screws & storage installation is tool-free. A center-post standoff holds the motherboard in place while you secure it & the dust filters are easily accessible & removable. Our innovative cable routing system has multiple cutouts with rubber grommets for superior airflow & a cleaner look & the CPU backplate cutout lets you install or upgrade your CPU cooling without removing the motherboard..