PCI Express X16 vs. X8 vs. X4 vs. X1 Slot: Difference, Use & Compatibility – DESKDECODE.COM
PCI-E Split Card PCIe 4.0 X16 to M.2 NVME M Key 4 SSDs RAID Array Adapter Card | eBay
PCI-E 4.0 x16 1 to 2 Expansion Card Gen4 Split Card PCIe-Bifurcation x16 to x8x8 | eBay
ORICO M.2 NVME to PCI-E 3.0 X16 Expansion Card (PSM2-X16)
Amazon.com: ELECTOP NVME PCIe x16 Adapter, M.2 Key-M SSD to PCI 3.0 Express Expansion Card, Support 2230/2242/2260/2280 with Heat Sink, Compatible with Windows XP / 7/8 / 10 & MAC OS System : Electronics