The SZ77R5 is a mainstream system for gaming, entertainment & multimedia purpose. The design brings some improvements in overall performance, overclocking, power management & also features PCIe v 3.0 & DDR3-1600 capability, an updated Direct X 11 graphics, security features & CPU instructions. In addition, the SZ77R5 supports four native USB (Universal Serial Bus) 3.0 ports that come with better power saving. Shuttle has always placed great emphasis on the interior & exterior aesthetics of the XPC, with the belief that a good blend of style & form factor allows the XPC to be attractive, versatile, & work well in almost any environment. The chassis & case cover are made from aluminum & come with a sleek brushed metal front fascia. Intel Rapid Storage technology offers new levels of protection, performance, & expandability for desktop platforms. By seamlessly storing copies of data on one or more additional hard drives, any hard drive can fail without data loss or system downtime. When the failed drive is removed & a replacement hard drive is installed, data fault tolerance is easily restored. The SZ77R5 sports four USB (Universal Serial Bus) 3.0 ports & USB (Universal Serial Bus) 2.0 x 6 ports. USB (Universal Serial Bus) 3.0 achieves a maximum data rate of up to 5.0 Gbps USB (Universal Serial Bus) 3.0 also comes with better power saving features to let your devices consume less power when in idle mode. The Shuttle XPC Barebone SZ77R5 supports the much anticipated Intel Smart Response technology which allows a SATA solid-state drive to function as cache for a conventional hard disk drive (HDD). It uses intelligent block-based caching of frequently used applications to improve system performance & responsiveness.