Genuine SanDisk X400 2.5" 7mm 512GB SATA SSD Hard Drive (U) SD8SB8U-51 – notebookparts.com
SD9SB8W-256G-1012-DELL - Refurbished - DELL / SANDISK 256GB 64-LAYER 3D NAND SATA III 2.5 INCH SMALL FORM FACTOR SFF 7MM X600 SERIES 6GB/S SATA3 READS 550MB/S WRITES 525MB/S SOLID STATE HARD DRIVE