Lenovo ThinkPad X1 - Manual (Page 9)

Electrical current safety information
DANGER
Electric current from power, telephone, and communication cables is
hazardous.
DANGER
Connect and disconnect cables as described in the following procedures
when installing, moving, or opening covers on this product or attached
devices.
To connect:
1. Turn everything OFF.
2. First, attach all cables to devices.
3. Attach signal cables to connectors.
4. Attach power cords to outlets.
5. Turn devices ON.
To disconnect:
1. Turn everything OFF.
2. First, remove power cords from
outlets.
3. Remove signal cables from
connectors.
4. Remove all cables from devices.
The power cord must be disconnected from the wall outlet or receptacle
before installing all other electrical cables connected to the computer.
The power cord may be reconnected to the wall outlet or receptacle only
after all other electrical cables have been connected to the computer.
Products with television tuner options installed
The notice below applies to products containing television (TV) tuner devices that
connect to external antennas or to cable/CATV systems, or both, and that are
intended to be installed in North America. Users and installers in other countries
should follow local codes and ordinances when installing appliances that connect
to external antennas and cable/CATV systems. If local codes are not applicable, it
is recommended that users/installers follow guidelines similar to those that follow.
Safety and Warranty Guide
vii