Lenovo ThinkPad T420 4177 Hardware Maintenance Manual page 4

Note
Before using this information and the product it supports, be sure to read the general information under
Appendix A "Notices" on page 139.
First Edition (February 2011)
© Copyright Lenovo 2011.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software are delivered pursuant a General Services
Administration "GSA" contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No.
GS-35F-05925.