Description Spare part number
●For use in Canada, the Cayman Islands, Guam, Puerto Rico, the U.S. Virgin Islands,
and the United States
504593-003
●For use in Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda, Argentina,
Armenia, Aruba, Australia, Austria, Azerbaijan, the Bahamas, Bahrain, Bangladesh, Barbados,
Belarus, Belgium, Belize, Benin, Bermuda, Bhutan, Bolivia, Bosnia and Herzegovina, Botswana,
Brazil, the British Virgin Islands, Brunei, Bulgaria, Burkina Faso, Burundi, Cameroon,
Cape Verde, the Central African Republic, Chad, Chile, Colombia, Comoros, the Congo,
Costa Rica, Croatia, Cyprus, the Czech Republic, Denmark, Djibouti, Dominica,
the Dominican Republic, East Timor, Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea,
Estonia, Ethiopia, Fiji, Finland, France, French Guiana, Gabon, Gambia, Georgia, Germany,
Ghana, Gibraltar, Greece, Grenada, Guadeloupe, Guatemala, Guinea, Guinea-Bissau,
Guyana, Haiti, Honduras, Hong Kong, Hungary, Iceland, India, Ireland, Israel, Italy,
the Ivory Coast, Jamaica, Jordan, Kazakhstan, Kenya, Kiribati, Kyrgyzstan, Laos, Latvia,
Lebanon, Lesotho, Liberia, Liechtenstein, Lithuania, Luxembourg, Macedonia, Madagascar,
Malawi, Malaysia, the Maldives, Mali, Malta, the Marshall Islands, Martinique, Mauritania,
Mauritius, Mexico, Micronesia, Monaco, Mongolia, Montenegro, Morocco, Mozambique,
Namibia, Nauru, Nepal, the Nether Antilles, the Netherlands, New Zealand, Nicaragua,
Niger, Nigeria, Norway, Oman, Pakistan, Palau, Panama, Papua New Guinea, Paraguay,
the People's Republic of China, Peru, the Philippines, Poland, Portugal,
the Republic of Moldova, Romania, Russia, Rwanda, Samoa, San Marino,
Sao Tome and Principe, Saudi Arabia, Senegal, Serbia, the Seychelles, Sierra Leone,
Singapore, Slovakia, Slovenia, the Solomon Islands, Somalia, South Africa, South Korea,
Spain, Sri Lanka, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, Suriname,
Swaziland, Sweden, Switzerland, Taiwan, Tajikistan, Tanzania, Togo, Tonga,
Trinidad and Tobago, Tunisia, Turkey, Turkmenistan, Tuvalu, Uganda, Ukraine,
the United Arab Emirates, the United Kingdom, Uruguay, Uzbekistan, Vanuatu, Venezuela,
Vietnam, Yemen, Zaire, Zambia, and Zimbabwe
504593-004
CAUTION: The WWAN module and the WLAN module are not interchangeable.
To prevent an unresponsive system, replace the wireless module only with a wireless module authorized
for use in the computer by the governmental agency that regulates wireless devices in your country or
region. If you replace the module and then receive a warning message, remove the module to restore
computer functionality, and then contact technical support through Help and Support.
Before removing the WLAN module, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect power from the computer by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the computer.
4. Remove the battery (see Battery on page 36).
50 Chapter 4 Removal and replacement procedures