Intel 20GB 311 Series mSATA II 3.0 Gb/s 50mm SLC Enterprise Solid-State Drive - SSDMAESC020G201 SSD-like performance with HDD capacity at lower cost than high capacity SSD Accelerates key OS and application data seamlessly using both an SSD and an HDD Caches frequently-used applications and data to improve system performance and responsiveness Intel Solid-State Drive 311 Series, Optimized for Intel Smart Response Technology when used with Intel Z68 Express Chipset Intel Rapid Storage Technology 10.5 and 2nd Generation Intel Core Processor