PCIe x2 VS PCIe x4 SSD! Read/Write Speed two budget NVME SSD - YouTube
PCI Express - Wikipedia
What is the difference between PCIe Gen 3 X2 and X4 SSDs? Can these two SSDs be used for laptops that support the PCIe interface? - Quora
Controller Card - PCIe 2x M.2 SATA SSD - SATA Controller Cards | StarTech.com
1TB M.2 2230 NVMe PCI Express 3.0 x2 SSD (Solid State Drive)-30mm Half Size, Brand : Samsung PM991 MZ-VLQ1T00, KLFGGAR4AA-K0T0 For Microsoft Surface Pro X, Microsoft Surface Pro 7+, Microsoft Surface Laptop
5 Bay M.2 RAID Adapter Soft RAID Function - GLOTRENDS
Xiaomi Mi Notebook Pro NVMe SSD Bios PCIe Slot x2 To x4 Fix - TechTablets
What is a PCIe SSD?
5 Slot M.2 B-key SATA Base PCI-e 3.0 x2 Bandwidth Controller Card Require x16 Slot