DFI GM831-CSF User manual

1
GM831-CSF Installation Guide
Package Contents
DFI reserves the right to change the specications at any time prior to the product's release. For the
latest revision and details of the installation process, please refer to the user's manual.
www.d.com
Note:
The software package that came with the system contains application and code samples
to implement gaming software for the system.
• One GM831-CSF system unit
• Demonstration kit:
- Power Supply (PSU)

2
Ports and Connectors
COM 3~4
DIO
USB 2.0
HDMI
DVI-D
COM 1
LAN
DP++
PS/2, KB/
MS
USB 3.1
Gen 1
Intrusion Switch
x 6
Mic-in
Line-out
Expension Slots
Front View
(with Power Supply)
Front View
USB 3.1
Gen 2

3
Connecting the Power Supply
The PSU is an optional item of GM831-CSF for the power supply solution. The instruction below is
to demonstrate the process to connect the PSU to GM831-CSF.
1. Make sure the system and all other peripherals connected to it have been powered o.
2. Disconnect all power cords and cables.
3. Remove the mounting screw on the side and take o the cover to unveil the hole. (Green
label)
4. Put all the cables from the PSU into GM831-CSF through the hole.
5. Connect the PSU to GM831-CSF's port using the multi-clolor cable. (Orange label)
6. Connect the PSU to GM831-CSF's port using the small cable. (Blue label)
7. Connect the PSU to GM831-CSF's port using the 1 at cable. (Pink label)

4
4
Mounting screws (step screws)
Installing a 2.5" SATA Drive
SATA Drive
Mounting
screw
HDD Bracket

5
5
SATA Drive
HDD Bracket

6
Installing GM901
GM901

7
PCIe x1
Door 7
Door 8
COM 1
PCIe x1
PCIe x1

8
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Board Layout and Jumper Settings
2
2
G2
M.2 M Key
PCIe 4 (PCIe x4)
Standby
Power
LED
ATX Power
1
12 24
13
2 1
13
14
LPC
TPM
(optional)
Chassis
Intrusion
1
System Fan 1
1
1 2
11
Front Panel
1 2
LAN LED
78
1
5
2
SMBus
SPI
Flash
BIOS
PCIe 2 (PCIe x16)
Intel I211AT
1
Clear CMOS (JP5)
C246/Q370
Intel
PCIe 3 (PCIe x4)
DDR4_1 DDR4_3
DDR4_4DDR4_2
PCIe 1 (PCIe x16)
CPU Fan
1
+12V
Power
4
3
Mini PCIe
Nuvoton
NCT6116D
1
USB 2.0
1
DIO
19
2
1
1
S/PDIF
Realtek
ALC888S
Front
Audio
21
910
I C
PS/2 KB/MS
USB 5-6
USB 2.0
COM 1
HDMI
Line-in (opt.)
Line-out
Mic-in
LAN 1
USB 1-2
USB 3.1 Gen 1
USB 9-10
or Optional
Vertical USB 9
210
1
9
1
9
19
COM 2
2
COM 3
2
COM 4
2
1
1
1
SATA 2
SATA 1
SATA 0
SATA 3.0
COM 2
RS232/Power
Select (JP7)
SATA 6
(CS331-C246 only)
SATA 5
SATA 3.0
1
Battery
Battery
Intel I219LM
Buzzer
6
51
COM 1
RS232/422/485
Select (JP2)
2
COM 1 RS232/Power
Select (JP4)
COM 1 RS232/422/485
Select (JP3)
6
5
2
1
6
5
2
1
6
5
2
1
6
5
2
1
(JP10)(JP6)(JP8)
COM 2
RS232/422/485
Select
4
8
1
5
System
Fan 2
SATA 3
COM 1
RS232/422/485
Select (JP1)
1
USB 3.1 1-2
Power Select (JP15)
USB 3.1 3-4 Power Select (JP16)
1
Mini PCIe/mSATA Signal Select
(JP9)
USB 2.0 7-8
Power Select
(JP17)
1
USB 2.0 9-10 Power Select (JP18)
1
11
USB 2.0 5-6 Power Select (JP21)
(JP20)
(JP21)
PS/2 Power Select (JP20)
1 10
1120
USB 5-6
1USB 3.1 5-6
Power Select (JP19)
USB 3.1 Gen 2
1
11
10 2
1
1
System
Fan 3
62 62
51 51
62
51
USB 7-8
DVI-I
(DVI-D signal)
DP++
LAN 2
USB 3-4
USB 3.1 Gen 2
LGA 1151 Socket
Clear CMOS Data JP5
Normal (default) 1-2 On
Clear CMOS Data 2-3 On
Mini PCIe/mSATA Signal
Select
JP9
Mini PCIE (default) 1-2 On
mSATA 2-3 On

9
Selection for COM 1 JP1/JP2
RS232 1-3, 2-4 On
RS422 3-5, 4-6 On
RS485 3-5, 4-6 On
PS/2 Power Select JP20
+5VDU (default) 1-2 On
+5V 2-3 On
Selection for COM 2 JP6/JP8
RS232 1-3, 2-4 On
RS422 3-5, 4-6 On
RS485 3-5, 4-6 On
Selection for COM 1 JP3
RS232 1-3, 4-6 On
RS422 3-5, 4-6 On
RS485 3-5, 2-4 On
Selection for COM 1 JP4
RS232 1-3 (RI-), 2-4 (DCD-) On
RS232 with power 3-5 (+5V), 4-6 (+12V) On
Selection for COM 2 JP7
RS232 1-3 (RI-), 2-4 (DCD-) On
RS232 with power 3-5 (+5V), 4-6 (+12V) On
Selection for COM 2 JP10
RS232 1-3, 4-6 On
RS422 3-5, 4-6 On
RS485 3-5, 2-4 On
USB Power Select JP15 (USB 3.1
1-2)
+5VDU (default) 1-2 On
+5V 2-3 On
USB Power Select JP17 (USB 2.0
7-8)
+5VDU (default) 1-2 On
+5V 2-3 On
USB Power Select JP16 (USB 3.1
3-4)
+5VDU (default) 1-2 On
+5V 2-3 On
USB Power Select JP19 (USB 3.1
5-6)
+5VDU (default) 1-2 On
+5V 2-3 On
USB Power Select JP18 (USB 2.0
9-10)
+5VDU (default) 1-2 On
+5V 2-3 On
USB Power Select JP21 (USB 2.0
5-6)
+5VDU (default) 1-2 On
+5V 2-3 On

10
Connector Pin Assignment
COM1/COM2 RS232/422/485 Select
Pins RS232 RS422 RS485
1DCD- RX+ DATA+
2SIN- RX- DATA-
3SO- TX+ NC
4DTR- TX- NC
5GND GND GND
6DSR- NC NC
7RTS- NC NC
8CTS- NC NC
9RI- NC NC
COM1/COM2 RS232 Power Select
Pins RS232 RS232 with power
1DCD- +12V
2SIN- SIN-
3SO- SO-
4DTR- DTR-
5GND GND
6DSR- DSR-
7RTS- RTS-
8CTS- CTS-
9RI- +5V
12 3 4 5
6 7 8 9

11
COM 3/4: RS232
Pins Pin Assignment
1DCD-
2SIN-
3SO-
4DTR-
5GND
6DSR-
7RTS-
8CTS-
9RI-
USB 3.1 Gen 2 5-6 Header
Pins Assignment Pins Assignment
1GND 20 PWR
2TX+ 19 DATA-
3TX- 18 DATA+
4GND 17 GND
5RX+ 16 RX+
6RX- 15 RX-
7GND 14 GND
8DATA+ 13 TX+
9DATA- 12 TX-
10 PWR 11 GND
USB 2.0 7-8/9-10 Headers
Pins Assignment Pins Assignment
1PWR 2 PWR
3DATA- 4DATA-
5DATA+ 6DATA+
7GND 8 GND
9--- 10 NC
Front Panel Pin Assignment
Pins Assignment Pins Assignment
1N.C.
PWR-
LED
2 LED Power
HD-
LED
3HDD Power 4 LED Power
5Signal 6Signal
RESET
7Ground ATX-
SW
8Ground
9Signal 10 Signal
11 N.C. 12 ---

12
Digital I/O Connector
Pins Pin Assignment Pins Pin Assignment
1GND 2 +12V
3DIO7 4 +12V
5DIO6 6 GND
7DIO5 8 +5V
9DIO4 10 +5V
11 DIO3 12 GND
13 DIO2 14 +5VDU
15 DIO1 16 +5VDU
17 DIO0 18 GND
19 GND 20 ---
LAN LED Pin Assignment
Pins Assignment Pins Assignment
1GBE_1000- 2GBE_LED_100-
3GBE_LED_LINK_
ACT- 43V3DU
5LINK_1000_4 6LINK_100_4
7LINK_ACTIVITY_4 83V3DU
LPC Pin Assignment
Pins Assignment Pins Assignment
1CLK 2 LAD1
3RST# 4 LAD0
5FRAME# 6 3V3
7LAD3 8 GND
9LAD2 10 ---
11 INT_SERIRQ 12 GND
13 5VDU 14 5V
Pins Pin Assignment
1GND
2+12V
3Sense
4Speed Control
CPU Fan
Pins Pin Assignment
1GND
2Power
3Sense
System Fan 1/2/3
Pins Pin Assignment
1GND
2TX+
3TX-
4GND
5RX-
6RX+
7GND
SATA 3.0 0/1/2/3/5
/6 (CS331~C246 only)

13
+12V Power
Pins Assignment Pins Assignment
1GND 5 +12V
2GND 6 +12V
3GND 7 +12V
4GND 8 +12V
ATX Power
Pins Pin Assignment Pins Pin Assignment
1+3.3V 13 +3.3V
2+3.3V 14 -12V
3GND 15 GND
4+5V 16 PS_ON#
5GND 17 GND
6+5V 18 GND
7GND 19 GND
8PWR_OK 20 NC
9+5VSB 21 +5V
10 +12V 22 +5V
11 +12V 23 +5V
12 +3.3V 24 GND
SMBus
Pins Assignment Pins Assignment
13V3DU 2 GND
3SMB_CLK 4SMB_DATA
5SMB_ALERT 6 ---
Pins Pin Assignment
1+5V
2---
3SPDIF out
4GND
5SPDIF in
S/PDIF
Pins Pin Assignment
1Signal
2GND
Chassis Intrusion