This adapter enables workstations to freely exchange data at bandwidth speeds ranging from 200Mbps to 10Mbps, with 100Mbps or 10Mbps LAN devices. The Auto-Negotiation function automatically chooses fastest possible bandwidth. Either Adapter will automatically set itself to operate at 200Mbps or 20Mbps bandwidth in Full-Duplex mode, and 100Mbps or 10Mbps in Half-Duplex mode, according to the connected device's capability. Moreover, easy to view LEDs make monitoring network status simple and effortless. Network attachment is as easy as a "click" with the shielded RJ-45 connector. As soon as this Adapter is installed into an existing 100BASE-TX, or 10BASE-T, network, they will be ready to receive data transfers. That is true plug-and-play convenience. A full range of driver software that is compatible with all major network operating systems comes with the Adapter. This Adapter runs in 32-bit bus master mode and provides flexibility that allows the network to grow at its own pace around the Adapter.