PCIE4.0 Split PCIE X16 to X8+X4+X4 Expansion Riser Card 2x .2 NVME Input Port - AliExpress
Which GPU gets bottlenecked by PCI-E 3.0 x8 vs x16 ? Is any of them even bottlenecked ? : r/buildapc
StarTech.com Dual M.2 PCIe 4.0 x8 x16 to Dual NVMe or AHCI SSD (DUAL-M2-PCIE -CARD-B)
PCIEX16E-844S | PCIe x16 edge connector to one PCIe x8 and two PCIe x4 Slots riser cable | x16 to x8 and x4 PCIe bifurcation riser cable | PCIEX16E-844S
PCI Express X16 vs. X8 vs. X4 vs. X1 Slot: Difference, Use & Compatibility – DESKDECODE.COM