Amazon.com: SIIG M.2 NGFF SSD (M Key) to PCIe 3.0 x4 Card Adapter For 2230, 2242,2260, 2280 M.2 PCIe Host Controller Expansion Card SSDs NVMe or AHCI (SC-M20014-S1) : Electronics
StarTech.com x4 PCI Express to SFF-8643 Adapter for PCIe NVMe U.2 SSD - PCI Express 2.5" NVM Express SSD Adapter - Add high-performance enterprise-class storage to your PC or server - Connect
PCI-E X4 to Dual NVMe PCIe Adapter,M.2 NVMe SSD to PCI-E X8/X16 Card Support M.2 (M Key) NVMe SSD 22110/2280/2260/2242 - Walmart.com
M.2 PCIe NVMe or PCIe AHCIM.2 PCIe SSD to PCIe 3.0 x 4 and M.2 SATA SSD to SATA III Adapter Card - PC Station Inc.
Ultra Compact Vertical Mount M.2 (NGFF) SSD to PCI-e Express 4X Adapter