Lenovo ThinkPad T520i (English) User Guide - Page 232
Menu item, Selection, Comments, Memory Protection, Enabled, Disabled, Virtualization, I/O Port Access
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Table 9. Security menu items (continued) Menu item Submenu item Memory Protection Execution Prevention Selection • Disabled • Enabled Virtualization Intel Virtualization Technology • Disabled • Enabled I/O Port Access 214 User Guide Intel VT-d Feature Ethernet LAN Wireless LAN WiMAX Wireless WAN Bluetooth Modem USB Port IEEE 1394 • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled • Disabled • Enabled Comments Some computer viruses and worms cause memory buffers to overflow by running code where only data is allowed. If the Data Execution Prevention feature can be used with your operating system, then by selecting "Enabled" you can protect your computer against attacks by such viruses and worms. If after choosing "Enabled" you find that an application program does not run correctly, select "Disabled" and reset the setting. If you select "Enabled," a VMM (Virtual Machine Monitor) can utilize the additional hardware capabilities provided by Intel Virtualization Technology. Intel VT-d is Intel Virtualization Technology for Directed I/O. When enabled, a VMM can utilize the platform infrastructure for I/O virtualization. If you select "Enabled", you can use the Ethernet LAN device. If you select "Enabled", you can use the Wireless LAN device. If you select "Enabled", you can use the WiMAX device. If you select "Enabled", you can use the Wireless WAN device. If you select "Enabled", you can use the Bluetooth device. If you select "Enabled", you can use the Modem device. If you select "Enabled", you can use the USB port. If you select "Enabled", you can use the IEEE 1394 (Firewire) device.