Original Samsung PM851 mSATA 512GB 256GB 128GB Internal SSD 1.8 inch Nvme SATA Solid State Drive - AliExpress
256GB mSATA PCI-E internal Solid State Drive (SSD) 30*50mm Samsung PM851 Series TLC MZ-MTE256D for Laptop, Server, Desktop and many more - WIT Computers
Amazon.com: SAMSUNG New A+ Replacement for Dell Laptop 00Y6FC PM851 256GB SSD HDD Mini PCIe mSATA MZ-MTE256D MZMTE256HMHP-000D1 TLC Hard Disk Drive : Electronics