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) - Newegg.com
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. - Newegg.com
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
What are PCIe x1 Slots Used For? | 8 PCIe Devices for x1 Slots - YouTube