User manual MSI NF725-C21 V2.0

[. . . ] When you are installing the CPU, make sure the CPU has a heat sink and a cooling fan attached on the top to prevent overheating. If you do not find the heat sink and cooling fan, contact your dealer to purchase and install them before turning on the computer. CPU Core Speed Derivation Procedure CPU Clock Core/Bus ratio then CPU core speed If = = = = = 100MHz 14 Host Clock x Core/Bus ratio 100MHz x 14 1. 4 GHz MSI Reminds You. . . Overheating Overheating will seriously damage the CPU and system, always make sure the cooling fan can work properly to protect the CPU from overheating. Replacing the CPU While replacing the CPU, always turn off the ATX power supply or unplug the power supply's power cord from grounded outlet first to ensure the safety of CPU. 2-3 NF725-C21 M-ATX Mainboard CPU Installation Procedures for Socket 478 1. [. . . ] Make sure to raise the lever up to a 90degree angle. The gold arrow should point towards the lever pivot. The CPU can only fit in the correct orientation. If the CPU is correctly installed, the pins should be completely embedded into the socket and can not be seen. Please note that any violation of the correct installation procedures may cause permanent damages to your mainboard. 5. Press the CPU down firmly Gold arrow Correct CPU placement Gold arrow O Gold arrow Incorrect CPU placement into the socket and close the lever. As the CPU is likely to move while the lever is being closed, always close the lever with your fingers pressing tightly on top of the CPU to make sure the CPU is properly and completely embedded into the socket. 2-4 X Press down the CPU Close Lever Hardware Setup Memory The mainboard provides 2 slots for 184-pin DDR SDRAM DIMM (Double In-Line Memory Module) modules and supports the memory size up to 2GB. You can install DDR200/266/333 modules on the DDR DIMM slots (DIMM 1~2). DDR DIMM Slots (DDR 1~2) 2-7 NF725-C21 M-ATX Mainboard DIMM Module Combination Install at least one DIMM module on the slots. You can install either single- or double-sided modules in any order to meet your own needs. Memory modules can be installed in any combination as follows: Slot DIMM 1 (Bank 0 & 1) DIMM 2 (Bank 2 & 3) Memory Module S/D S/D Total Memory 64MB~1GB 64MB~1GB 64MB~2GB Maximum System Memory Supported S: Single Side D: Double Side Installing DDR Modules 1. You can attach a serial mouse or other serial devices directly to the connector. Pin Definition 1 2 3 4 5 PIN 1 2 3 4 5 6 7 8 9 SIGNAL DCD SIN SOUT DTR GND DSR RTS CTS RI DESCRIPTION Data Carry Detect Serial In or Receive Data Serial Out or Transmit Data Data Terminal Ready) Ground Data Set Ready Request To Send Clear To Send Ring Indicate 6 7 8 9 9-Pin Male DIN Connector 2-15 NF725-C21 M-ATX Mainboard Connectors The mainboard provides connectors to connect to FDD, IDE HDD, case, modem, LAN, USB Ports, IR module and CPU/System FAN. Floppy Disk Drive Connector: FDD1 The mainboard provides a standard floppy disk drive connector that supports 360K, 720K, 1. 2M, 1. 44M and 2. 88M floppy disk types. FDD1 2-16 Hardware Setup Hard Disk Connectors: IDE1 & IDE2 The mainboard has a 32-bit Enhanced PCI IDE and Ultra DMA 33/66/ 100/133 controller that provides PIO mode 0~4, Bus Master, and Ultra DMA 33/66/100/133 function. You can connect up to four hard disk drives, CDROM, 120MB Floppy (reserved for future BIOS) and other devices. IDE2 IDE1 IDE1 (Primary IDE Connector) The first hard drive should always be connected to IDE1. IDE1 can connect a Master and a Slave drive. You must configure second hard drive to Slave mode by setting the jumper accordingly. IDE2 (Secondary IDE Connector) IDE2 can also connect a Master and a Slave drive. MSI Reminds You. . . If you install two hard disks on cable, you must configure the second drive to Slave mode by setting its jumper. Refer to the hard disk documentation supplied by hard disk vendors for jumper setting instructions. 2-17 NF725-C21 M-ATX Mainboard Fan Power Connector: CPUFAN1 The CPUFAN1 (processor fan) supports system cooling fan with +12V. When connecting the wire to the connector, 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. GND +12V SENSOR CPUFAN1 MSI Reminds You. . . Always consult the vendors for proper CPU cooling fan. [. . . ] This section will explain how to change your motherboard's function through the use of jumpers. Clear CMOS Jumper: JBAT1 There is a CMOS RAM on board that has a power supply from external battery to keep the data of system configuration. 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 JBAT1 (Clear CMOS Jumper ) to clear data. Follow the instructions below to clear the data: 1 3 Keep Data 1 3 Clear Data 1 3 JBAT1 MSI Reminds You. . . [. . . ]