This upgrade kit, consisting of a riser cable and a PCI slot bracket, allows two graphics cards to be installed a vertical orientation inside the Lian Li PC-O11 Dynamic XL (ROG Certified) Midi-Tower. To achieve this, the bottom five of a total of seven slot brackets on the Lian Li PC-O11 Dynamic XL will be removed and replaced by those included in the kit. Those wishing to install a second graphics card, also in a vertical orientation, will require a second riser cable which is also available from Lian Li. Technical Details:The latest PCIe 4.0 supports transfer rates of 16GT/s bit rate. While providing double the bandwidth of PCIe 3.0, the Gen 4.0 riser cable remains backward compatible with a maximum transfer speed, offers great performance, and shows off the GPU at a great new angle. MODEL: O11DXL-1 vertical GPU bracket kit PCI-e 4.0 COLOUR: Black MATERIAL: Steel BRACKET DIMENSION: (L) 195.8 mm x (W)166.7 mm x (H)137.4 mm PCI-E 4.0 CABLE LENGTH: 200 MM