Amazon.com: GLOTRENDS Mini PCIe Extension Cable (23.6 Inch/60cm), Mini PCI-E to PCI-E X4 Riser Cable for PCIe WiFi Card, M.2 PCIe Card, Firewire Card, USB PCIe Card, Sound Card, etc (UEX105) :
Mini PCIe Extension Cable 23.6 Inch/60cm, Mini PCI-E to PCI-E X4 Riser Cable for BTC Miner Mining, WiFi Adapter, USB Adapter, M.2 PCI-E SSD Adapter, etc. Add-On Cards - Newegg.com
hardware - What's the bandwidth and form factor for PCIe x1 x4 x8 and x16? - Server Fault
Select the Right PC for Your PCI Express Hardware - NI
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 - 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) Add-On Cards - Newegg.com
Amazon.com: MZHOU NVME M.2 SSD M Key to PCI-e 3.0 x1 Host Controller Expansion Card,Supports M2 NGFF PCI-e 3.0, 2.0 or 1.0, NVME or AHCI, M-Key, 2280, 2260, 2242, 2230 Solid State
The Evolution of the PCI Express Specification: On its Sixth Generation, Third Decade and Still Going Strong | PCI-SIG
What is a PCI Express 3.0 x16 slot? - Quora
All about PCIe (PCI Express) – Elgato
Using 10Gb adaptor in PCIe 1x slot (An Unraid 10Gb journey) - Hardware - Unraid
What are Small PCIe x1 Slots Used For?
What is the actual speed of a PCI-Express x1 (PCI-E 3.0) slot? - Quora