User manual

ARK-3382 User Manual 14
Note: NC represents “No Connection”
2.3.4 Ethernet Connectors (LAN)
The ARK-3382 is equipped with one Intel 82551ER Ethernet controller
and three Realtek RTL8139DL Ethernet controllers that are all fully com-
pliant with IEEE 802.3u 10/100Base-T CSMA/CD standards. The ARK-
3382 embedded box computer provides four standard RJ-45 jack connec-
tors of LAN , LAN2, LAN3 and LAN4, each connector comes with LED
indicators on the front side to show its Active/Link status (Green LED)
and Speed status (white LED).
Figure 2.8: Ethernet connector
Table 2.5: COM2 standard serial port pin assignments
RS-232 RS-422 RS-485
Pin Signal Name Signal Name Signal Name
1DCD Tx- DATA-
2RxD Tx+ DATA+
3 TxD Rx+ NC
4DTR Rx- NC
5 GND GND GND
6DSR NC NC
7RTS NC NC
8CTS NC NC
9RI NC NC
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