PCIe x8 Gen3 Dual Port Cable Adapter - One Stop Systems
PCI-E X8 2- Port NVMe M.2 M-Key Extended Card - NWCA Inc.
Amazon.com: GLOTRENDS M.2 PCIe X1 Adapter with M.2 Screw for M.2 PCIe 4.0/3.0 SSD (NVMe/AHCI Key M), PCIe X1/X4/X8/X16 Lane Installation, but Only PCIe X1 Bandwidth (PA09-X1) : Electronics
Impact of PCI-E Speed on Gaming Performance | Puget Systems
PCIe x8 to 2-Port U.2 NVMe Adapter
Dual Slot M.2 NVMe PCIe 4.0 X8 Adapter Card with ASM 1182E Chip, Only Work with PCIe Splitter Function Motherboard
Which GPU gets bottlenecked by PCI-E 3.0 x8 vs x16 ? Is any of them even bottlenecked ? : r/buildapc
M.2 PCIe NVMe SSD to PCI-E Express 3.0 X4 X8 X16 Adapter Card Full Speed 2280 | eBay