U1 user's manual (English)
Page 73
... established. CLASS 4: Class 4 lasers are eye-safe and consequently require no controls. These lasers cannot produce hazardous diffuse reflections. The POST checks system memory, the motherboard circuitry, the display, the keyboard, the diskette drive, and other I/O devices. Glossary (Cont.) A Appendix Kensington® Locks Kensington® locks (or compatible) allow the Notebook...
... established. CLASS 4: Class 4 lasers are eye-safe and consequently require no controls. These lasers cannot produce hazardous diffuse reflections. The POST checks system memory, the motherboard circuitry, the display, the keyboard, the diskette drive, and other I/O devices. Glossary (Cont.) A Appendix Kensington® Locks Kensington® locks (or compatible) allow the Notebook...