MSI K8n Neo4 Manual

2-7
Hardware Setup Memory
DIMM1~4
(from bottom to top)
The mainboard provides 4 slots for 184-pin DDR SDRAM DIMM (Double In-Line Memory
Module) modules and supports the memory size up to 4GB. You can install DDR266/
333/400 modules on the DDR DIMM slots (DDR 1~4).
For the updated supporting memory modules, please visit 
http://www.msi.com.tw/program/products/mainboard/mbd/pro_mbd_trp_list.php.
DIMM Module Combination
Install at least one DIMM module on the slots. Each DIMM slot supports up to a maximum...

2-8 MS-7125 ATX MainboardMSI Reminds You...
-Dual-channel DDR works ONLY in the 3 combinations listed in
the table as below.
-Please select the identical memory modules to install on the dual
channel, and DO NOT install three memory modules on three
DIMMs, or it may cause some failure.
-Always insert the memory modules into the GREEN slots first, and
it is strongly recommended not to insert the memory modules into
the PURPLE slots while the GREEN slots are left empty.
-This mainboard DO NOT support the...

2-9 Hardware SetupInstalling DDR Modules
1.The DDR DIMM has only one notch on the center of module. The module will only
fit in the right orientation.
2.Insert the DIMM memory module vertically into the DIMM slot. Then push it in until
the golden finger on the memory module is deeply inserted in the socket.
3.The plastic clip at each side of the DIMM slot will automatically close.VoltNotchMSI Reminds You...
You can barely see the golden finger if the module is properly in-
serted in the socket.MSI...

2-10 MS-7125 ATX MainboardPower Supply
The mainboard supports ATX power supply for the power system.  Before inserting
the power supply connector, always make sure that all components are installed
properly to ensure that no damage will be caused.
PINSIGNAL
13+3.3V
14-12V
15GND
16PS-ON#
17GND
18GND
19GND
20Res
21+5V
22+5V
23+5V
24GNDPINSIGNAL
 1+3.3V
 2+3.3V
 3GND
 4+5V
 5GND
 6+5V
 7GND
 8PWR OK
 95VSB
10+12V
11+12V
12NC Pin Definition ATX 24-Pin Power Connector: ATX1
This connector allows you to...

2-11 Hardware SetupImportant Notification about Power Issue
NForce chipset is very sensitive to ESD (Electrostatic Discharge), therefore this
issue mostly happens while the users intensively swap memory modules under S5
(power-off) states, and the power code is plugged while installing modules. Due to
several pins are very sensitive to ESD, so this kind of memory-replacement actions
might cause system chipset unable to boot. Please follow the following solution to
avoid this situation.
Unplug the AC...

2-12 MS-7125 ATX MainboardThe back panel provides the following connectors:Back PanelMouse Connector (Green) / Keyboard Connector (Purple)
The mainboard provides a standard PS/2®
 mouse/keyboard mini DIN connector for
attaching a PS/2®
 mouse/keyboard. You can plug a PS/2®
 mouse/keyboard directly
into this connector. The connector location and pin assignments are as follows:
PS/2 Mouse / Keyboard
(6-pin Female)213
45 6PINSIGNALDESCRIPTION
1Mouse/Keyboard  DataMouse/Keyboard  data
2NCNo connection...

2-13 Hardware SetupIEEE1394 Port (Optional)
The back panel provides one standard IEEE 1394 port. The standard IEEE1394 port
connects to IEEE1394 devices without external power. The IEEE1394 high-speed
serial bus complements USB by providing enhanced PC connectivity for a wide range
of devices, including consumer electronics audio/video (A/V) appliances, storage
peripherals, other PCs, and portable devices.IEEE1394 PortUSB Connectors
The mainboard provides two OHCI (Open Host Controller Interface)...

2-14 MS-7125 ATX Mainboard
LAN (RJ-45) Jack
The mainboard provides one standard RJ-45 jacks for connection to single Local
Area Network (LAN). This Giga-bit LAN enables data to be transferred at 1000, 100
or 10Mbps. You can connect a network cable to either LAN jack.
Audio Port Connectors
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. Mic is a...

2-15 Hardware SetupParallel Port Connector: LPT1
The mainboard provides a 25-pin female centronic connector as LPT.  A parallel port
is a standard printer port that supports Enhanced Parallel Port (EPP) and Extended
Capabilities Parallel Port (ECP) mode.131
14
25
PINSIGNALDESCRIPTION
1STROBEStrobe
2DATA0Data0
3DATA1Data1
4DATA2Data2
5DATA3Data3
6DATA4Data4
7DATA5Data5
8DATA6Data6
9DATA7Data7
10ACK#Acknowledge
11BUSYBusy
12PEPaper End
13SELECTSelect
14AUTO FEED#Automatic Feed
15ERR#Error
16INIT#Initialize...

2-16 MS-7125 ATX MainboardThe mainboard provides connectors to connect to FDD, IDE HDD, case, 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.Connectors
FDD1Fan Power Connectors: CPUFAN1 / SFAN1 / SFAN2 / NBFAN1
The CPUFAN1 (processor fan), SFAN1 (system fan 1), SFAN2 (system fan 2) and
NBFAN1 (NorthBridge Chipset fan) support system cooling fan...