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Electronic emissions notices
For electronic emission information on Class B digital devices, refer to the corresponding information in
the User Guide.
Trademarks
The following terms are trademarks of Lenovo in the United States, other countries or both:
Active Protection System
Lenovo
ThinkLight
ThinkPad
ThinkVantage
TrackPoint
Ultrabay
UltraNav
The following terms are trademarks of Microsoft Corporation in the United States, other countries, or both:
Windows
Windows Vista
The following terms are trademarks of Intel Corporation or its subsidiaries in the United States, other
countries, or both:
Intel
Intel Centrino
Intel Core
Other company, product, or service names may be the trademarks or service marks of others.
166 ThinkPad T520, T520i, and W520 Hardware Maintenance Manual