M.2 solid-state drive . . . . . . . . . . . 58
Chapter 8. Help and support . . . . . 63
Frequently asked questions . . . . . . . . . . 63
Error messages . . . . . . . . . . . . . . . 64
Beep errors . . . . . . . . . . . . . . . . 65
Self-help resources . . . . . . . . . . . . . 66
Call Lenovo . . . . . . . . . . . . . . . . 67
Before you contact Lenovo . . . . . . . . 67
Lenovo Customer Support Center . . . . . . 67
Purchase additional services. . . . . . . . . . 68
Appendix A. Important safety
information . . . . . . . . . . . . . . . 69
Appendix B. Accessibility and ergonomic
information . . . . . . . . . . . . . . . 83
Appendix C. Supplemental
information about the Linux operating
system . . . . . . . . . . . . . . . . . 87
Appendix D. Compliance
information . . . . . . . . . . . . . . . 89
Appendix E. Notices and
trademarks . . . . . . . . . . . . . . . 103
ii X390 Yoga User Guide
