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Amazon.com: Western Digital WD 128GB SSD PC SN520 M.2 2230 30mm PCIe Gen3 x2 NVMe SDAPTUW-128G Solid State Drive for Dell HP Lenovo Laptop Desktop Ultrabook Kiosk POS MFP IoT : 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.