MSI 945gm2 H Manual

							2-5 Hardware Setup5.The CPU has a plastic cap on it to
protect the contact from damage.
Before you have installed the CPU,
always cover it to protect the socket
pin.6.Remove the cap from lever hinge side
(as the arrow shows). The pins of
socket reveal.7.Lift the load lever up and open the
load plate.8.Correctly align the triangle of CPU Clip
with the CPU chamfer, and the square
on the CPU Clip to the hook of the
socket.9.Use your thumb and the middle fin-
gers to push the clips to release the
CPU, then press down the CPU with
your index finger to allow the whole
module to be installed onto the CPU
socket.10.The CPU is installed well on the CPU
socket. 
						

							2-6MS-7210 Micro-ATX MainboardMSI Reminds You...
1.Check the information in PC Health Status of H/W Monitor in BIOS
(Chapter 3) for the CPU temperature.
2. Whenever CPU is not installed, always protect your CPU socket pin
with the plastic cap covered (shown in Figure 1) to avoid damaging.
3. Please note that the mating/unmating durability of the CPU is 20 cycles.
Therefore we suggest you do not plug/unplug the CPU too often.12.  Press down the load lever lightly
onto the load plate, and then secure
the lever with the hook under reten-
tion tab. 11.Visually inspect if the CPU is seated
well into the socket, then remove the
CPU Clip with 2 fingers. Then cover
the load plate onto the package.13. Align the holes on the mainboard with
the cooler. Push down the cooler until
its four clips get wedged into the
holes of the mainboard.14.Press the four hooks down to fasten
the cooler. Then rotate the locking
switch (refer to the correct direction
marked on it) to lock the hooks.locking
switch
15.Turn over the mainboard to confirm
that the clip-ends are correctly
inserted.Note:If you want to uninstall the CPU,
align the 4 points (see Point 8 for
details) again and push the clip to
lift up the CPU. 
						

							2-7 Hardware SetupMemoryThe 945GM2 series provides 4 slots for 240-pin DDR2 DIMM, which supports
the memory size up to 4GB. And the 945PLM2 series provides 2 slots for 240-pin
DDR2 DIMM, which supports the memory size up to 2GB.
Since DDR2 modules are not interchangeable with DDR1 and the DDR2 stand-
ard is not backward compatible, you should always install DDR2 memory module in
the DDR2 slot. Otherwise, you are not able to boot up your system and your mainboard
might be damaged.
For the updated supporting memory modules, please visit http://www.msi.
com.tw/program/products/mainboard/mbd/pro_mbd_trp_list.php.
DIMM1~DIMM4
(from left (Orange) to right(Green))
Channel A (DIMM1 & DIMM2): Orange
Channel B (DIMM3 & DIMM4): Green
945GM2 provides 4 (DIMM1/2/3/4) slots
945PLM2 provides 2 (DIMM1/3) slots
Introduction to DDR2 SDRAM
DDR2 is a new technology of memory module, and its speed is the top limit of
current DDR1 technology. DDR2 uses a 1.8V supply for core and I/O voltage, com-
pared to 2.5V for DDR1, and requires 28% less power than DDR1 chips. DDR2 truly
is the future of memory, but will require some changes as the technology is not
backwardly compatible and only motherboards specifically designed for DDR2 memory
will be able to support these chips.
DDR2 incorporates new features at the chip level that give it better signal
integrity, thereby enabling higher clock speeds.
DDR2 modules have 240 pins, versus 184 pins on a DDR1 module, and the
length of DDR2 module is 5.25”. DDR2 modules have smaller and tighter spaced pins.
The height of DDR2 modules varies, but they will typically be less than 1.3” in height.
Memory Module Population Rules
Install at least one DIMM module on the slots. Each DIMM slot supports up to a
maximum size of 1GB. Users can install either single- or double-sided modules to
meet their own needs. Please note that each DIMM can work respectively for
single-channel DDR, while both channels (in different color) populated
with same amount of memory size will work as dual-channel DDR. 
						

							2-8MS-7210 Micro-ATX Mainboard
Installing DDR2 Modules
1.The DDR2 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. DIMM1 (Ch A)DIMM2 (Ch A)DIMM3 (Ch B)DIMM4 (Ch B)System Density
256MB~1GB256MB~1GB512MB~2GB
256MB~1GB256MB~1GB512MB~2GB
256MB~1GB256MB~1GB512MB~2GB
256MB~1GB256MB~1GB512MB~2GB
256MB~1GB256MB~1GB256MB~1GB256MB~1GB1GB~4GBGREENGREEN
ORANGEORANGEMSI Reminds You...
-Dual-channel DDR2 works ONLY in the 5 combinations listed in
the table shown in the previous page.
-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 ORANGE slots first,
and it is strongly recommended not to insert the memory modules
into the GREEN slots while the ORANGE slots are left empty.
-This mainboard DO NOT support the memory module installed
with more than 18 pieces of IC (integrated circuit).
-Due to the South Bridge resource deployment, the system density
will only be detected up to 3+GB (not full 4GB) when each DIMM is
installed with an 1GB memory module. 
						

							2-9 Hardware SetupPower 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
12+3.3V Pin Definition ATX 24-Pin Power Connector: ATX1
This connector allows you to connect an ATX 24-pin power supply. To
connect the ATX 24-pin power supply, make sure the plug of the power supply is
inserted in the proper orientation and the pins are aligned. Then push down the
power supply firmly into the connector.
ATX1MSI Reminds You...
1. These three connectors connect to the ATX power supply and have to
work together to ensure stable operation of the mainboard.
2. Power supply of 400 watts (and above) is highly recommended for
system stability.
3. ATX 12V power connection should be greater than 18A. JPW1PINSIGNAL
15V
2GND
3GND
412V ATX2 Pin Definition
4 2 1
3
JPWR1PINSIGNAL
5+12V
6+12V
7+12V
8+12VPINSIGNAL
1GND
2GND
3GND
4GND JPW1 Pin Definition
18
5 4ATX 12V Power Connector: JPW1/ JPWR1
The JPW1 12V power connector is used to provide power to the CPU. And the
JPWR1 12V power connector is used to provide power to the PCIEX16 graphics
card.1 1224
13 
						

							2-10 MS-7210 Micro-ATX Mainboard
The back panel provides the following connectors:
Back Panel Mouse/Keyboard Connector
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) 2
13
4 5
6 PIN
SIGNAL DESCRIPTION
1 Mouse/Keyboard  Data Mouse/Keyboard  data
2 NC No connection
3 GND Ground
4 VCC +5V
5 Mouse/Keyboard Clock Mouse/Keyboard clock
6 NC No connection
 Pin Definition
Keyboard
COM Port
USB Ports
Mic L-Out
L-In
Mouse Parallel
LAN RS-Out
SPDIF
OutCS-Out
IEEE
1394
(optional)
VGA Port
(for 945G only) Serial Port Connector: COM Port
The mainboard offers one 9-pin male DIN connector COM Port. It ’s a 16550A
high speed communication port that send/receive/ 16 bytes FIFOs. You can attach a
serial mouse or other serial device directly to it.
     9-Pin Male DIN Connector
COM Port1    2    3    4    5
6    7    8    9 PIN
SIGNAL DESCRIPTION
1 DCD Data Carry Detect
2 SIN Serial In or Receive Data
3 SOUT Serial Out or Transmit Data
4 DTR Data Terminal Ready)
5 GND Ground
6 DSR Data Set Ready
7 RTS Request To Send
8 CTS Clear To Send
9 RI Ring Indicate Pin Definition 
						

							2-11 Hardware SetupUSB Connectors
The mainboard provides an OHCI (Open Host Controller Interface) Universal
Serial Bus root for attaching USB devices such as keyboard, mouse or other USB-
compatible devices.  You can plug the USB device directly into the connector.
USB Ports1     2     3     4
5     6     7     8PINSIGNALDESCRIPTION
1VCC+5V
2-Data 0Negative Data Channel 0
3+Data0Positive Data Channel 0
4GNDGround
5VCC+5V
6-Data 1Negative Data Channel 1
7+Data 1Positive Data Channel 1
8GNDGroundUSB Port Description VGA Connector (for 945G only)
The mainboard provides a DB 15-pin female connector to connect a VGA
monitor. VGA Connector
(DB 15-pin)1
5
11
15PinSignal DescriptionPinSignal Description
  1RED  2GREEN
  3BLUE  4N/C
  5GND  6GND
  7GND  8GND
  9+5V 10GND
 11N/C 12SDA
 13Horizontal Sync 14Vertical Sync
 15SCLIEEE 1394 Port (optional)
There is one 1394 port on the back panel providing the connection for 1394
devices.1394 port 
						

							2-12MS-7210 Micro-ATX Mainboard
LAN (RJ-45) Jack
The mainboard provides 1 standard RJ-45 jack for connection to single Local
Area Network (LAN). This LAN enables data to be transferred at 1000Mbps (for
8110S only), 100Mbps or 10Mbps. You can connect a network cable to it.
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 connector for microphones.
However, there is an advanced audio application provided by Realtek ALC880
to offer support for 7.1-channel audio operation and can turn rear audio connectors
from 2-channel to 4-/5.1-/7.1- channel audio.Giga-bit LAN Pin Definition
PINSIGNALDESCRIPTION
1D0PDifferential Pair 0+
2D0NDifferential Pair 0-
3D1PDifferential Pair 1+
4D2PDifferential Pair 2+
5D2NDifferential Pair 2-
6D1NDifferential Pair 1-
7D3PDifferential Pair 3+
8D3NDifferential Pair 3-RJ-45 LAN JackMSI Reminds You...
For the advanced functions of the audio codec, please refer to Chapter
6: Introduction to Realtek ALC880 Audio Codec for details.Rear Speaker Out
 (in 7.1CH / 5.1CH)Line Out
(Front R/L) Line In / Line Out
(Surround R/L)
(in 7.1 CH)
MICCenter/Subwoofer
Speaker Out
( in 7.1CH / 5.1CH)
SPDIF-Out 
						

							2-13 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 Ex-
tended 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 Printer
17SLIN#Select In
18GNDGround
19GNDGround
20GNDGround
21GNDGround
22GNDGround
23GNDGround
24GNDGround
25GNDGround Pin Definition 
						

							2-14MS-7210 Micro-ATX MainboardThe mainboard provides connectors to connect to FDD, IDE HDD, case, LAN,
and USB Ports.
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
FDD1
(black)Fan Power Connectors: CPU_F2/ SYS_F1
The CPU_F2 (processor fan) and SYS_F1 support system cooling fan with
+12V. It supports four/three-pin head connector. When connecting the wire to the
connectors, always take note that the red wire is the positive and should be con-
nected 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 spe-
cially designed fan with speed sensor to take advantage of the CPU fan control.
SYS_F1
CPU_F2SENSOR +12VGNDControlSensor+12V GNDMSI Reminds You...
1.Always consult the vendors for proper CPU cooling fan.
2.Please refer to the recommended CPU fans at Intel®
 official
website.