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Quick Reference
GH551
Board Layout
32
1
31
30
29
28
27
26
25
24
23
9
1
10
22
Heater
31
12V DC-In
32
DDR4 (Bottom)
33
Nano SIM (Bottom)
34
33
933-GH5511-000G A-595-Q-2019
33
19
20
21
1
1
1
2
1
10
2
3
1
1
1
7
1
2
8
1
2
9
1
10
39
11
12
1
10
16
2
34
2
18
14
15
9
1
1
2
17
LAN1, USB 3.0
26
DP4
27
DP3
28
DP2
29
DP1
30
www.dfi.com
M.2 M Key
1
Front Audio
2
Speaker
3
9
2
JP9000
4
1
1
JP6
5
4
JP1
6
5
6
Battery
7
6
JP5
8
5
6
JP4
9
5
LVDS Backlight
10
1
LED1
11
LVDS
12
40
USB 0/3 (USB 2.0)
13
SMBus
14
Buzzer
15
2
Mini PCIe
16
13
COM1
17
1
5
SATA Power
18
1
SATA
19
CPU Fan
20
DIO
21
JP2
22
USB 5 (USB 2.0)
23
LAN3
24
LAN2, USB 3.0
25
1
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Summary of Contents for DFI GH551
- Page 1 Quick Reference GH551 www.dfi.com Board Layout M.2 M Key Front Audio Speaker JP9000 Battery LVDS Backlight LED1 LVDS USB 0/3 (USB 2.0) SMBus Buzzer Mini PCIe COM1 SATA Power SATA CPU Fan Heater LAN1, USB 3.0 12V DC-In DDR4 (Bottom) USB 5 (USB 2.0)
- Page 2 3-4 On: +5V 5-6 On: +3.3V (default) 6. Clear CMOS (JP1) 1-2 On: Normal (default) 2-3 On: Clear CMOS Pin Assignments 13. USB 2.0 Ports 32. 12V DC-In Assignment N.C. V1000 +Data +Data only -Data -Data +12V +12V Quick Reference | GH551...
- Page 3 SPK_Out_L+ 21. DIO SPK_Out_L- SPK_Out_R- SPK_Out_R+ Assignment Assignment DIO_7 DIO_6 20. CPU Fan DIO_3 DIO_4 Assignment DIO_5 DIO_2 Ground DIO_1 DIO_0 Power 5VSB Sense 14. SMBus 31. Heater Assignment Assignment Assignment 3V3SB SMBus_Clock SMBus_DATA 12VSB_PG_SW SMBus_Alert Quick Reference | GH551...
- Page 4 PWM Brightness Control Backlight On/Off DFI reserves the right to change the specifications at any time prior to the product's release. This QR may be based on editions that do not resemble your actual products. For more documentation and drivers, please visit the download page at go.dfi.com/GH551,or via the QR code to the right.