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 - Newegg.com
Vertical GPU Mount Loop Bracket Graphic Card Holder with Ultra PCIe 4.0 X16 Gen4 Riser Cable
Amazon.com: High Speed PCI Express Riser Card PCI-E 3.0 x 16 Riser Card Extender Ribbon Flexible Extension Cable 90 Degree for Computer Graphic Cards (30CM) : Electronics