Lenovo ThinkPad T400s series User Manual page 36

Usage environment and your health
Wireless LAN PCI Express Mini Card, Wireless WAN PCI Express Mini Card, and Bluetooth device emit radio frequency electromagnetic
energy like other radio devices. However, the level of energy emitted is far much less than the electromagnetic energy emitted by wireless
devices like for example mobile phones.
Due to the fact that Wireless LAN PCI Express Mini Card, Wireless WAN PCI Express Mini Card, and Bluetooth device operate within the
guidelines found in radio frequency safety standards and recommendations, Lenovo believes the integrated wireless cards are safe for use by
consumers. These standards and recommendations reflect the consensus of the scientific community and result from deliberations of panels
and committees of scientists who continually review and interpret the extensive research literature.
In some situation or environment, the use of Wireless LAN PCI Express Mini Card, Wireless WAN PCI Express Mini Card or Bluetooth device
may be restricted by the proprietor of the building or responsible representatives of the organization. These situations and areas may for
example include:
Using the integrated wireless cards on board of airplanes, in hospitals or near petrol stations, blasting areas (with electro-explosive
devices), medical implants or body-worn electronic medical devices, e.g. pace makers.
In any other environment where the risk of interference to other devices or services is perceived or identified as harmful.
If you are uncertain of the policy that applies on the use of wireless devices in a specific organization (e.g., airport or hospital), you are
encouraged to ask for authorization to use Wireless LAN PCI Express Mini Card, Wireless WAN PCI Express Mini Card or Bluetooth device
prior to turning on the computer.