What is the actual speed of a PCI-Express x1 (PCI-E 3.0) slot? - Quora
What are Small PCIe x1 Slots Used For?
Amazon.com: GLOTRENDS M.2 PCIe X1 Adapter with M.2 Heatsink 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-HS-BK) (Silver) : Electronics
Amazon.com: GLOTRENDS PCIe 3.0 Riser Cable, Male 1X to Female X4, 23.6 Inch Length, for PCIe X1/X4 Host Adapter, Such as WiFi Card, M.2 PCIe Card, Firewire Card, USB PCIe Card, Sound
Speed testing -x16 vs. -x1 with PCI Express video cards
hardware - What's the bandwidth and form factor for PCIe x1 x4 x8 and x16? - Server Fault
Better Suited for USB 3.0? - AMD's 890GX Chipset - Same Graphics, Better South Bridge
PCIe X1 to 2-ch M.2 SATA 6Gbps Expander, JMB582 control chip | PCIe -SATA-M2-2P-A