PCIE X1 To USB 3.0 Expansion Card 4 Port USB 3.0 5Gbps PCI Express X1 Adapter Card Converter For PCIE X1 X4 X8 X16| | - AliExpress
Pci-e Pci Express To Pci Adapter Cable Mini Pci-e X1 To X16 Riser Card - Add On Cards & Controller Panels - AliExpress
StarTech.com PCI Express X1 to X16 Low Profile Slot Extension Adapter Card Model PEX1TO162 - 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
Amazon.com: PCI-E 1 to 4 PCI Express 16X Slots Riser Card Mining Modules PCI -e 1X to External 4 PCIe Slots Adapter Pcie Port Multiplier-GOLDEN BLUE : Electronics
Amazon.com: 2 Port M.2 SSD to PCI-e x1 adapter B or B+M key (SI-PEX40115) : Everything Else