For PCs with PCI Express (PCIe) slots, the Intel PRO/1000 PT Desktop Adapter offers the newest technology for maximizing system performance and increasing end-user productivity. Specifically, the Intel PRO/1000 PT Desktop Adapter uses auto-negotiation to allow the adapter to run at the highest available network speed (10, 100 or 1000 Mbps), and it maintains full bandwidth capacity with the dedicated 2.5-Gbps bandwidth of a PCI Express input/output (I/O) bus to provide connectivity you can count on.