Amazon.com: ADT-LINK PCIe X8 to X8 Adapter Cable for Graphics Video Card PCI Express Extender PCIe X8 to PCIe X8 Slot Extension Cable for 1U 2U Server (5CM) : Electronics
hardware - What's the bandwidth and form factor for PCIe x1 x4 x8 and x16? - Server Fault
PCIe Gen 4 vs. Gen 3 Slots, Speeds
New PCIe x8 to M2 NVMe extension cable supports NVMe SSD interface PCIE 4.0x4 full speed 64G/bps - AliExpress
Dual M.2 PCIe SSD Adapter, NVMe / AHCI - Drive Adapters and Drive Converters | Hard Drive Accessories | StarTech.com
PCIe x8 Gen4 for Bifurcated M.2 NVMe Dual Port AIC
U.2 Interface PCI-E PCI Express 4.0 X8 To U2 SFF-8639 Extension Cable PCIe4.0x4 | eBay
PCI-E X8 2- Port NVMe M.2 M-Key Extended Card - NWCA Inc.
SlimSAS 8i (SFF-8654) to PCIe x8 Slot Adapter - Walmart.com
P27F Series (x16/x8/x4/x1) Flexible x16 PCI Express Extender