Western Digital WD Green SATA 1TB, Up to 545MB/s, 2.5 Inch/7 mm, 3Y Warranty, Internal SSD Solid State Drive WDS100T3G0AAbout this item SLC (single-level cell) caching boosts write performance to quickly perform everyday tasks. Shock-resistant and WD F.I.T. Lab certified for compatibility and reliability. Ultra-low power-draw so you can use your laptop for longer periods of time. The free, downloadable Western Digital SSD Dashboard* lets you easily monitor the status of your drive. Includes a 3-year limited warranty so upgrading your storage is worry-free.