Follow this procedure to change the link speed and duplex mode of the network card in the Microsoft® Windows® XP operating system.

1. Click the Start button, and then click Control Panel.
2. In the Control Panel window, under Pick a category, double-click the Performance and Maintenance icon.
3. In the Performance and Maintenance window, under or pick a Control Panel icon, double-click the System icon.
4. In the System Properties window, click the Hardware tab.
5. On the Hardware tab, in the Device Manager box, click the Device Manager button.
6. In the Device Manager window, double-click the Network Adapters icon.
7. Under the Network Adapters icon, click to select the network adapter.
8. On the menu bar, click Actions.
9. On the Actions menu, click Properties.
10. In the network adapter properties window, click the Advanced tab.
11. On the Advanced tab, in the Property: box, click to select Link Speed/Duplex Mode.
12. Under Value:, click the down arrow, then click to select the desired link speed and duplex mode.