4 Ports M.2 (B Key) Sata NGFF SSD to PCIe X1 Adapter Expansion Card For Mining | eBay
What are Small PCIe x1 Slots Used For?
USB-C Adapter 2-Port USB 3.1 PCIe CardX1 - Coolgear
Amazon.com: SinLoon PCI E X1 M.2 Adapter M.2(NGFF) M Key SSD to PCI-e X1 Card M.2 NVME to PCI Express Adapter for M.2 SSDs with PCI-E (M-Key) Interface Type : Electronics