X221, -LC, -AI
TECHNICAL REFERENCE MANUAL
VERSION: 1.4
Page 16 of 38
5.12
J17 - MICRO USB
Standard pinout.
Host and device mode supported.
Powered by power limiting switch with 500mA.
5.13
J18 – Wi-Fi
JST-GH 1.25mm
Pin
Description
Socket pin
Note
1
3.3V
2
WPS1
Connects to pin 6 of LM823-Module 1
3
WPS2
Connects to pin 6 of LM823-Module 2
4
GND
Prepared for LM823 3.3V modules.
Wi-Fi options can be found in the Wi-Fi Appendix.
Wi-Fi bays for modules are only supported on the AI version and will not work with the standard
configuration as the necessary components are not present.
For options including LM823 modules solder on please contact Auvidea.
5.14
J19 - SUPER CAP UPS
For optional super cap addon board.
This will support a graceful power down in case of a power outage.
5.15
J20 - PCIEx4/x1/USB/UART/I2C/GPIO
DF17(3.0)-80DS-0.5V (57)
Extension connector for variety of extension boards.
Pin
Description
Socket pin
Note
1
5V
2
5V
3
5V
4
5V
5
3.3V
6
VCC_SRC
12V
7
3.3V
8
VCC_SRC
12V
9
1.8V
10 VCC_SRC
12V
11 TRX-0_P
A56
SPI1_MISO
12 CAN1_STBY
B62
13 TRX-0_N
D55
SPI1_MOSI
14 NC
15 TRX-1_P
J57
SPI1_SCK
16 NC