This product is either discontinued or we cannot get that from suppliers.
Western Digital WDS480G2G0B Drive, Green SSD Drives, Capacity 480GB, Device Type Internal Solid State Drive (SSD), FF M.2 2280, Interface SATA III, Max Sequential Read Up to 545 MBps, MTTF Up to 1.0M hours.
Western Digital Green 480GB M.2 2280 SSD Transfer Speeds Up To 545MB/S - SSD Drives (WDS480G2G0B) With the performance boost from a WD Green SATA SSD, you can browse the web, play a game, or simply start your system in a flash.