FLOW 6.1 GPU Mining Rig Open Air Frame Computer Case Chassis with 6 USB Risers - Ethereum ETH Bitcoin BTC Supports up to 6 GPUs and 2 power supplies for maximizing mining potential. Comes with 6 PCI-E 16x to 1x USB Powered Riser Kits for secure and reliable connections and consistent power delivery. Strong, light-weight and high-quality black aluminium frame coupled with piano black acrylic panels. Includes all needed screws for attaching your hardware: power supplies, GPUs, motherboard, and hard drives . Space economizing footprint: 14.5 inches wide, 11 inched deep, 21.5 inches high.