TS-8390-49xx Ethernet Ports
From embeddedTS Manuals
The TS-8390 includes 2x 10/100 Ethernet ports. The CPU #Ethernet (eth0) is next to the 3.5mm Audio Port. The second ethernet (eth1) is added through the USB SMSC LAN9514 chip using the smsc95xx driver. See the #Configuring the Network section for more information on using these ports in Linux.