User manual MSI MS-7125

[. . . ] This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his own expense. [. . . ] Please follow the following solution to avoid this situation. Unplug the AC power cable (shown in figure 1) or unplug the ATX1 & JPW1 power connectors (shown in figure 2 & figure 3) before the 1st installation or during system upgrade procedure. Figure 1: Unplug the AC power cable Figure 2: Unplug the ATX1 power connector Figure 3: Unplug the JPW1 power connector The back panel provides the following connectors: Parallel Mouse LAN LAN (Optional) (Optional) L-In RS-Out You can plug a PS/2® mouse/keyboard directly into this connector. You can attach a serial mouse or other serial devices directly to the connector. The mainboard provides two OHCI (Open Host Controller Interface) Universal Serial Bus roots for attaching USB devices such as keyboard, mouse or other USB-compatible devices. You can plug the USB device directly into the connector. You can connect a network cable to either LAN jack. The left 3 audio jacks are for 2-channel mode for stereo speaker output: Line Out is a connector for Speakers or Headphones. Line In is used for external CD player, Tape player, or other audio devices. However, there is an advanced audio application provided by Realtek ALC850 to offer support for 7. 1-channel audio operation and can turn rear audio connectors from 2-channel to 4-/5. The CPUFAN1 (processor fan), SFAN1 (system fan 1), SFAN2 (system fan 2) and NBFAN1 (NorthBridge Chipset fan) support system cooling fan with +12V. When connecting the wire to the connectors, always take note that the red wire is the positive and should be connected to the +12V, the black wire is Ground and should be connected to GND. If the mainboard has a System Hardware Monitor chipset on-board, you must use a specially designed fan with speed sensor to take advantage of the CPU fan control. pin Definition PIN 1 2 3 4 5 6 7 8 9 10 SIGNAL AUD_MIC AUD_GND AUD_MIC_BIAS AUD_VCC AUD_FPOUT_R AUD_RET_R HP_ON KEY AUD_FPOUT_L AUD_RET_L DESCRIPTION Front panel microphone input signal Ground used by analog audio circuits Microphone power Filtered +5V used by analog audio circuits Right channel audio signal to front panel Right channel audio signal return from front panel Reserved for future use to control headphone amplifier No pin Left channel audio signal to front panel Left channel audio signal return from front panel If you don't want to connect to the front audio header, pins 5 & 6, 9 & 10 have to be jumpered in order to have signal output directed to the rear audio ports. Otherwise, the Line-Out connector on the back panel will not function. You must configure the setting through the BIOS setup to use the IR function. The mainboard provides another 1394 pin header that allows you to connect IEEE 1394 ports via an external IEEE1394 bracket (optional). pin Definition PIN 2 1 10 9 1 3 SIGNAL TPA+ Ground TPB+ Cable power Key (no pin) PIN 2 4 6 8 10 SIGNAL TPAGround TPBCable power Ground The mainboard comes with a JDB1 connector for you to connect to D-BracketTM 2. Pin 1 2 3 4 5 6 7 8 9 10 Signal DBG1 (high for green color) DBR1 (high for red color) DBG2 (high for green color) DBR2 (high for red color) DBG3 (high for green color) DBR3 (high for red color) DBG4 (high for green color) DBR4 (high for red color) Key NC D-BracketTM 2 is an external USB bracket integrating four Diagnostic LEDs, which use graphic signal display to help users understand their system. the LEDs provide up to 16 combinations of signals to debug the system. The 4 LEDs can debug all problems that fail the system, such as VGA, RAM or other failures. [. . . ] We suggest user to make sure that your CPU can afford to overclocking regularly first. If you find the PC appears to be unstable or reboot incidentally, it's better to disable the Dynamic Overclocking or to lower the level of overclocking options. By the way, if you need to conduct overclocking manually, you also need to disable the D. Select the number between [200]~[400] for needed frequency. [. . . ]