Sony PCV-L640 - Manual (Page 39)

Enabling Ethernet
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Enabling Ethernet
Your computer comes with a preinstalled Ethernet interface. To enable faster
startup, your computer ships with this function disabled. You may, however,
enable Ethernet connectivity by following the instructions below.
To enable the Ethernet connection:
1 Right-click My Computer on the desktop and select Properties.
2 Click the Device Manager tab.
3 Select “Realtek RTL8139 (A/B/C/8130) PCI Fast Ethernet NIC” under the
Network Adapters category.
4 Click Properties.
5 Click Enable Device and then click OK.
6 Click Close.