"This BIOS feature is useful in many ways. For example, the USB, SATA ODD, eSATA, Express Card and card reader interfaces can be locked to prevent users from copying out any data from the notebook. Companies that wish to prevent their employees from surfing the Internet can use this BIOS feature to lock the WLAN, LAN and modem interfaces.
Of course, the BIOS must be secured using a password for the locks to work. Otherwise, anyone can simply unlock these interfaces using... "