Customize Your Cooling for TVs, a 2 x 240mm fan for routers, server workstations and closets, or use separately ( two fans can be 2.8ft from each other). High Performancefor gpu mining rigs, cabinets, radiators, electronic enclosures computers case, receivers, amplifiers, modems, routers, DVRs, and other AV equipment. Variable Speed Controller set the fan's speed freely to achieve the balance between noise and airflow levels for any environment. Input 100-240V AC; Fits any wall socket or ac outlet. Dual-Ballbearings rated at up to 50,000 hrs ensure long-lasting performance. Airflow: 4x 93CFM; High Speed: 4x 2500RPM (max.). Easy to Use 2 in 1 fans with a Y splitter cable.and all necessary assembly hardware.Can be freely assembled horizontally or vertically.