Lanner LEC-2250 - Manual (Page 18)

17
Board Layout
Chapter 3
Embedded and Industrial Computing
The LEK-IOA4 board
DC_IN CONNECTOR (CN1): A Phoenix connector for
external power supply.
RS-232 Serial Port (COM3 and COM4) without
hardware auto flow control: It is a RS-232/422/485 port
through the D-SUB9 connector.
Dual USB Port Connector #0 and #1 (USB1):
Pin No. Pin Name
1 dC_GNd
2 dC_IN 2 1
6 7 8 9
1 2 3 4 5
Pin No. Pin Name
Rs-232 Rs-422 Rs-485
1 dCd TXd- dATA-
2 Rxd TXd+ dATA+
3 Txd Rxd+
4 dTR Rxd-
5 GNd signal Ground
6 dsR
7 RTs
8 CTs
9 RI
1 2 3 4
5 6 7 8
Pin No. Pin Name
1 UsB power
2 UsB2_dAT-
3 UsB2_dAT+
4 signal Ground
5 UsB Power
6 UsB3_dAT-
7 UsB3_dAT+
8 signal Ground