M.2 NGFF to Desktop PCIe X4 X8 X16 NVMe SATA Dual SSD PCI Express Adapter Card for sale online | eBay
QNINE NVME Adapter PCIe x16 with Heat Sink, M.2 SSD Key M to PCI Express Expansion Card, Support PCIe x4 x8 x16 Slot, Support 2230 2242 2260 2280, Compatible for Windows XP / 7/8 / 10_Products_QNINE
What does the X4 mean in an M.2 PCIe Gen 3.0 X4 NVME drive? Solved - Windows 10 Forums
Apple MacBook Pro/Air (2013-2017) SSD (12+16pins) to Desktop Computer's Motherboard PCI Express X4 slot support card - WIT Computers
Amazon.com: Tripp Lite M.2 NGFF PCIe SSD (M-Key) PCI Express x4 Card, Solid State Drive (PCE-1M2-PX4) : Electronics