23
Chapter 2
HARDWARE INSTALLATION
User's Manual |
CS551
Pin Assignment
1
Ground
2
Power
3
Sense
3-pin Fan Pin Assignment
CPU Fan
X
Internal I/O Connectors
These fan connectors are used to connect to cooling fans. Cooling fans provide adequate air
circulation throughout the chassis and dissipate heat to prevent overheating of the system
board and components. The 3-pin CPU fan modulates fan speed via voltage modulation.
Battery
X
Internal I/O Connectors
The external lithium ion battery supplies power to the real-time clock and CMOS memory as an
auxiliary source of power when the main power is shut off.
Safety Measures
• There exists explosion hazard if the battery is incorrectly installed.
• Replace only with the same or equivalent type recommended by the manufacturer.
• Dispose of used batteries according to local ordinances.
Battery
External Battery
Connect to board
3.3V
2 1
GND
Mini PCIe
M.2
M Key
Front
Audio
1
5
6
1
2
2
9
10
JP3
5
6
1
2
JP5
JP1
Buzzer
1
1
1
1
1
1
1
5
2
SATA 3.0
LVDS
Backlight
Power
SATA
Power
LVDS
Heater and Switch
LED1
LAN1
LAN2
DP++1/2
USB 3/4 (left), 1/2 (right)
(USB 3.1
Note
)
COM1
DIO
CPU Fan
USB 5/6 (USB 2.0)
1
2
2
1
1
1
1
2
9
10
10
9
2
1
10
9
39
40
SPI Flash BIOS
DDR4_1 SODIMM
SMBus
Battery
JP2
1
