Specially designed with dual GPU placement, the View 31 TG RGB has the support for vertical graphic card layout with dual PCI-E slots design. The PCI-e riser cable is optional. Plus, the included riser GPU support bracket not only can prevent the graphic card from sagging, but also helps to reduce the weight on the motherboard. Thermaltake PCI-e X16 Riser Cable (Optional) – Support a wide range of GPU solutions.