2-27 
Pin No.  Signal Name  Discription 
3)  
VCC  Main control board 5V supply 
4)  
VCC  Main control board 5V supply 
5)  
GND Ground 
6)  
GND Ground 
7)  
VDD  Main control board 3.3V supply 
8)  
VDD  Main control board 3.3V supply 
9)  
GND Ground 
10)  
FAN_STATE1_IN  Fan status signal 1 
11)  
FAN_STATE2_IN  Fan status signal 2 
12)  
AC_DET  Detection signal of AC in-place 
13)  
RSVD_IN3_IN  Backup detection signal 
14)  
DIMMING_OUT  Backlight brightness adjustment signal 
15)  
PCON Power on/off control signal 
16)  
GND Ground 
17)  
SDA IIC data 
18)  
SCL IIC clock 
19)  
GND Ground 
20)  
DM3  USB3 data signal - 
21)  
DP3  USB3 data signal + 
22)  
UIVCC_USB USB 5Vsupply 
23)  
GND Ground 
24)  
RXD_TC 
Series port sent signal (with AG 
module) 
25)  
TXD_TC 
Series port received signal (with AG 
module) 
26)  
GND Ground 
27)  
RXD_KB 
Series port sent signal (with module 
rack) 
28)  
TXD_KB 
Series port received signal (with 
module rack) 
29)  
BL_BCON  Backlight enable signal 
30)  
COLOR_SEL_LCD LCD color (18/24bits) choosing 
31)  
GND Ground 
32)  
LCDVDD  Power supply of LCD 
33)  
VCC_USB2  Power supply of USB2 
34)  
DM2  USB2 data signal - 
35)  
DP2  USB2 data signal +