Athena Power 100mm/3.94" CABLE-PCIE16A1-R10V2 90-Degree Right Angle Flexible GPU Server / Gaming PCI-E x16 to x16 3.0 Extender Riser Cable Female to Male Internal Power Cables - Newegg.com
PCIe 4.0 Riser Cable, GEN 4 x16 PCI Express [ PCIE 4.0 ] [ 20cm & 90° ] Black | eBay