ADDTRON TECHNOLOGY CO., LTD. PN-16CT NIC Type Ethernet Transfer Rate 10Mbps Data Bus 16-bit ISA Topology Linear Bus/Star Wiring Type Unshielded twisted pair RG-58A/U 50ohm coaxial Boot ROM Available N1122 DIAGNOSTIC LED(S) LED Status Condition LED1 Blinking Data is being transmitted/received LED1 Off Data is not being transmitted/received LED2 On Network connection is good LED2 Off Network connection is not good