The CIR remote receiver is able to receive the multi-direction infrared signal (top, down & front), which is compatible with most of the chassis on the market. For users who are tempted to connect the SSD & HDD on motherboard, the Intel Smart Response technology can make the SSD become the "cache of the HDD" to boost up the HDD access speed. ASRock XFast USB (Universal Serial Bus) technology redefines the standard in high performance computing. Proving once again to be the pioneer in motherboard industry, ASRock XFast USB (Universal Serial Bus) series motherboard integrates with the XFast USB (Universal Serial Bus) technology which delivers fast USB (Universal Serial Bus) data transfer speed. Even when the system is powered off, On/ Off Play technology still allows users to enjoy the great audio experience from the portable audio devices through the PC speaker.