TF-3239DL keeps low cost and eliminates usage barriers. It is the easiest way to upgrade a network from 10 to 100Mbps. Supports both 10Mbps and 100Mbps network speed both in Half-Duplex and Full-Duplex transfer modes, using Auto-Negotiation technology to detect the network speed. It also can be widely used in most modern Operating System. For Windows Me/2000/2003/XP/Vista/Windows 7 integrates the right driver, TF-3239DL is really a plug-and-play device.