Controller Card PCI Express x1 2.0 - For 2 SSD M.2 Type SATA in Formats 2280, 2260, 2242 and 2230 - Chipset ASM1061- by Computer District: Amazon.de: Computer & Accessories
Amazon.co.jp: ALIKSO M.2 NGFF PCIe 22110 SSD (NVMe & AHCI) to PCIe x1 Adapter Connector, Host Controller Expansion Card, Support M2 NGFF PCIe 3.0, 2.0 or 1.0 with Half Hiro File Bracket : Computers
ICY DOCK 2.5” SATA (6Gbps) SSD/HDD to PCIe 2.0 x1 Hot-Swap Mobile Rack for PCIe Expansion Slots - ToughArmor MB839SP-B : Amazon.in: Computers & Accessories
hardware - Force renegotiation of PCI Express link speed? x2 card reverts to x1 width - Server Fault