User manual
Chapter 2 Installation 
EC7-1817LNAR  - 15 - 
Power Connector 
Pin  Signal Name 
1 +12V 
2 +12V 
3 GND 
PWR1
4 GND 
Pin  Signal Name 
1 +12V 
2 GND 
3 GND 
PWR2~PWR5 
Pitch: 2.54mm 
4 +5V 
SATA Connector 
The board provides four SATA sockets and the pin definitions are as follows: 
Pin  Signal Name 
1 GND 
2 TX+ 
3 TX- 
4 GND 
5 RX- 
6 RX+ 
SATA1/SATA2 
SATA3/SATA4 
7 GND 
Hot-swap of SATA Hard Disk 
Notices for hot-swap of SATA hard disk: 
1.  The hard disk shall support SATA 2.0 and use 15-pin SATA hard disk power 
connector. 
2.  The driver of chipset shall support the hot-swap of SATA hard disk. 
3.  Hot-swap of SATA hard disk with the operating system is forbidden when system 
is powered-on. 










