A 10/100Mbps Fast Ethernet 32bit PCI Adapter for desktops, workstations, and servers. These LAN Cards supports a wide range of operating systems including Macintosh and Windows. With support for IEEE802.3 and IEEE 802.3u standards, the DFE-530TX+ supports 10BASE-T and 100BASE-TX networks. These LAN cards also utilizes auto-negotiation to automatically adjust to the highest supported transfer rates up of to 200Mbps in full duplex mode.