128GB SanDisk SD8SN8U-128G-1006 and SD8SN8U-128G-1004, X400 & X600 Series 128GB SATA 6Gb/s M.2 2280 SATA III NGFF Solid State Drive(SSD) - WIT Computers
SanDisk X400 SSD Review - StorageReview.com
SanDisk X400 SSD Review (512GB) | The SSD Review
Genuine SanDisk X400 2.5" 7mm 512GB SATA SSD Hard Drive (U) SD8SB8U-51 – notebookparts.com