MSI P55A User Guide - Page 27

Chapter 2 MS-7668 Back Panel Coaxial S/PDIF-Out Mouse/Keyboard IEEE 1394 LAN Line-In RS-Out Line-Out CS-Out USB 2.0 Port Optical S/PDIF-Out Clear CMOS Button USB 2.0 Port USB 3.0 Port Mic SS-Out ▶ Mouse/Keyboard The standard PS/2® mouse/keyboard DIN connector is for a PS/2® mouse/keyboard. ▶ Clear CMOS Button There is a CMOS RAM on board with an external battery power supply to preserve the system configuration data. With the CMOS RAM, the system can automatically boot OS every time it is turned on. If you want to clear the system configuration, use the button to clear data. Press the button to clear the data. Important Make sure that you power off the system before clearing CMOS data. After pressing this button to clear CMOS data in power off (G3) state, the system will boot automatically. ▶ Coaxial S/PDIF-Out This S/PDIF (Sony & Philips Digital Interconnect Format) connector is provided for digital audio transmission to external speakers through a coaxial cable. ▶ Optical S/PDIF-Out This SPDIF (Sony & Philips Digital Interconnect Format) connector is provided for digital audio transmission to external speakers through an optical fiber cable. ▶ IEEE 1394 Port The IEEE 1394 port on the back panel provides connection to IEEE 1394 devices. ▶ USB 2.0 Port The USB (Universal Serial Bus) port is for attaching USB devices such as keyboard, mouse, or other USB-compatible devices. Supports data transfer rate up to 480Mbit/s (Hi-Speed). 2-11