Chapter 1 Introduction© National Instruments Corporation 1-5 ENET-232 and ENET-485 Series User ManualThe LEDs show the current status of the serial device server. Table 1-1describes each LED.Serial Server Software OverviewWindows 2000/NT 4.0The serial server software for Windows 2000/NT includes a nativeWindows 2000/NT kernel driver that provides full interrupt-driven,buffered I/O for multiple COM ports. Using this driver, you can obtain amaximum baud rate of 460.8 kbits/s for the ENET-485 and 230.4 kbits/s forthe ENET-232.The serial server software includes the following components:• Device driver• Serial Configuration utility (NI Ports)• NI Ethernet Device Configuration utility• Serial Device Server Diagnostics utility• NI Ethernet Device Firmware Update utilityTable 1-1. LED DescriptionsLED DescriptionPWR/RDY Flashes rapidly at start-up while performing selftests and when acquiring network parameters. Asteady yellow state indicates the box is ready foroperation. Slow flashing pattern indicates an erroroccurred.LINK 10/100 Indicates the serial device server detected a twistedpair (10Base-T or 100Base-TX) link. The colorindicates the connection speed. If yellow, the speedis 10 Mbits/s. If green, the speed is 100 Mbits/s.TX Indicates the serial device server is transmitting tothe Ethernet network.RX Indicates the serial device server is receivingEthernet network traffic.PORT x Indicates which serial ports are open.