NVMe PCIe x4 x2 M.2 NGFF SSD to PCIe x1 converter card adapter PCIe x1 to M.2 New Arrival
USB 3.1 PCIe X2 Host Controller Card - Coolgear
What is the difference between PCIe Gen 3 X2 and X4 SSDs? Can these two SSDs be used for laptops that support the PCIe interface? - Quora
Addonics released USB 3.1 PCIe 2X controller
PCI Express PCI-E 3.0 X4 to USB 3.2 Gen2 x2 Type C 20Gb/s Expansion Card | eBay
P27F Series (x16/x8/x4/x1) Flexible x16 PCI Express Extender
ssd m2 SATA or m2 PCIe x2 NVMe or PCIe x4 NVMe for HP 15-b... - HP Support Community - 7286655
Amazon.com: Ableconn PEX-SA151 SATA III RAID 2-Port PCIe x2 Card (ASMedia ASM1062R Controller) - Support RAID 0 / RAID 1 / Span/Non-RAID : Everything Else
Amazon.com: PCIe Gen3 x2 USB 3.2 / 3.1 Card ASM3142- PCI Express to 4-Port Type C HUB Internal Expansion Card Controller Adapter PCI Express Card Desktop PC Support Multiple INs : Electronics
5 Slot M.2 B-key SATA Base PCI-e 3.0 x2 Bandwidth Controller Card Require x16 Slot