Patriot SCORCH M.2 2280 512GB PCI-Express 3.0 x2 with NVMe 1.2 Internal Solid State Drive (SSD) PS512GPM280SSDR - Newegg.com
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Team Group MP32 M.2 2280 256GB PCIe 3.0 x2 with NVMe 1.3 Internal Solid State Drive (SSD) | Help Tech Co. Ltd
SDAPTUW-256G Western Digital PC SN520 256GB M.2 2230 Nvme Pcie GEN3 X2 SSD NGP80 M.2 SSD / Solid State Drive - Walmart.com
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Amazon.com: KingSpec 1TB M.2 NVMe SSD, 2242 PCIe Gen3x2 Internal Solid State Drive for Laptop/Notebook (2242, 1TB) : Electronics
I harvested a PCIe Gen3 x2 NVMe 1.3 SSD from my older laptop, the problem is that its length is short. I've held it in place with some tape, it should hold.
CORSAIR FORCE Series MP300 SSD 120GB 240GB m.2 2280 NVMe PCIe Gen3 x2 M.2 SSD 480GB 960GB Solid State Storage 3,000MB/s laptop - AliExpress Computer & Office
5 Slot M.2 B-key SATA Base PCI-e 3.0 x2 Bandwidth Controller Card Require x16 Slot