MSI X99s Gaming 7 Manual

- 21 -
1-7 Back Panel Connectors
USB 2.0/1.1 Port
The	USB	 port	supports	 the	USB	 2.0/1.1	 specification.	 You	can	connect	 a	USB	 DAC	 to	this	 port	 or	use	 this	
port	for	USB	devices	such	as	a	USB	keyboard/mouse,	USB	printer,	USB	flash	drive	and	etc.
PS/2 Keyboard/Mouse Port
Use this port to connect a PS/2 mouse or keyboard.
CPU Overclocking ButtonPress this button to overclock your CPU. To return to the defaults, press this button again.
Fast Boot ButtonPress	 this	button	 down	to	enable	 the	fast...

- 22 -
Refer	to	the	 instructions	 on	setting	 up	a	2/5.1-channel	 audio	configuration	 in	Chapter	 6,	"Configuring	
2/5.1-Channel Audio."
Tighten the antenna cables to the antenna connectors and then move the an\
tenna to a place where 
the signal is good.
Line In/Mic In JackThe line in/Mic in jack. Use this audio jack for line in devices such as\
 optical drive, walkman, microphone, etc.
Line OutThe line out jack. Use this audio jack for a 2-channel speaker. This jack can be used to connect...

- 23 -
1-8 Installing the I/O Shield
Step 1:
Install	the	included	 I/O	shield	 into	the	chassis.	 (For	actual	 installation,	
please	refer	to	the	user	guide	for	your	chassis.)
Step 2:
Place the motherboard into the chassis, aligning the back panel con-
nectors with the installed I/O shield. Connect the power cable from the \
I/O shield to the LED_CON1 connector on the motherboard.
For how to turn on/off the I/O shield LED indicators, refer to the instructions on in Chapter 2, "BIOS 
Setup,"...

- 24 -
1-9 Onboard Buttons, Switches, and LEDs
Quick Buttons
This motherboard has four quick buttons: Power, Reset, Clear CMOS, and Direct to BIOS. The power button 
and reset button allow users to quickly turn on/off or reset the computer in an open-case environment when 
they want to change hardware components or conduct hardware testing. Use this button to clear the BIOS 
configuration	 and	reset	 the	CMOS	 values	to	factory	 defaults	 when	needed.	 The	Direct	 to	BIOS	 button	 helps	
users	more...

- 25 -
Audio Gain Control Switches
The switch allows for audio gain control for the headphone/speaker out jack on the back panel. Please set it 
according	to	your	headphone	specification	(actual	effects	may	vary	by	the	device	being	used).	
2: 6x
1:	2.5x	(Default)21
F_USB30F_U
B_F_F_

_
B
BS_
B
SB_
B
_S

S_
_
B
_U
_
B



\
\
S 
12 312 3
12 312 3
1
1
1
1
BSS\
S\
_S 
SS\
U
12345
\
S3\
BSSS \
U
__ 3
F_USB3F
S_
S _
S _
\
SF


B_
F
_0 S
S
_0F\
_F
_
_
__B

Pin No.Definition
1Power
2GND
Voltage Measurement...

- 26 -
1-10	 Changing	the	Operational	Amplifier
Step 1:
Use an IC extractor to carefully grip the IC's sides and extract it from 
the socket.
Step 2:
Align the notch on your OP chip with the notch on the socket and gently 
press the chip into the socket until seated.
For purchasing the IC extractor and OP Chip, please contact the local dealer.
Hardware Installation  

- 27 -
1-11 Internal Connectors
Read the following guidelines before connecting external devices:
 •First make sure your devices are compliant with the connectors you wish \
to connect.
 •Before installing the devices, be sure to turn off the devices and your computer. Unplug the power 
cord from the power outlet to prevent damage to the devices.
 •After installing the device and before turning on the computer, make sure the device cable has 
been securely attached to the connector on the motherboard.
2...

- 28 -
1/2) ATX_12V_2X4/ATX (2x4 12V Power Connector and 2x12 Main Power Connector)
  With the use of the power connector, the power supply can supply enough stable power to all the components 
on	the	 motherboard.	 Before	connecting	 the	power	 connector,	 first	make	 sure	the	power	 supply	 is	turned	
off and all devices are properly installed. The power connector possesses a foolproof design. Connect the 
power supply cable to the power connector in the correct orientation.
  The 12V power connector...

- 29 -
 •Be sure to connect fan cables to the fan headers to prevent your CPU and system from overheat-
ing. Overheating may result in damage to the CPU or the system may hang.\
 •These	fan	headers	 are	not	configuration	 jumper	blocks.	 Do	not	 place	 a	jumper	 cap	on	the	 headers.
4/5)  CPU_FAN/SYS_FAN1/2/3 (Fan Headers)
  All fan headers on this motherboard are 4-pin. Most fan headers possess \
a foolproof insertion design. 
When	 connecting	 a	fan	 cable,	 be	sure	 to	connect	 it	in	 the	 correct...

- 30 -
6) CPU_OPT (Water Cooling CPU Fan Header)
  The fan header is 4-pin and possesses a foolproof insertion design. When connecting a fan cable, be sure 
to	connect	 it	in	 the	 correct	 orientation	 (the	black	 connector	 wire	is	the	 ground	 wire).	The	speed	 control	
function requires the use of a fan with fan speed control design.
DEBUG 
PORT
G.QBOFM
1
7) LED_CON1 (I/O Shield Audio LED Power Connector) 
  The power connector provides power to the LEDs on the I/O shield on the motherboard back...