Intel PRO/1000 MT Desktop Adapter (WLA8391MT) Migrate desktop PCs to a flexible 10/100/1000 Mbps platform Best-in-class adapter delivers Gigabit performance over Category-5 cabling Adapter automatically negotiates to your network's speed, simplifying future upgrades to Gigabit Advanced management capabilities to lower support costs Designed to IEEE 802.3ab standards for greater interoperability