Dell Precision T3400 User's Guide - Page 23
headphone connector, sound or telephony program.
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10 power light The power light illuminates and blinks or remains solid to indicate different states: • No light - The computer is turned off (S4, S5, or mechanical OFF). • Steady green - The computer is in a normal operating state. • Blinking green - The computer is in a powersaving state (S1 or S3). • Blinking or solid amber - See "Power Problems" on page 123. To exit from a power-saving state, press the power button or use the keyboard or mouse if it is configured as a wake device in the Windows Device Manager. For more information about sleep states and exiting from a power-saving state, see "Power Management" on page 40. For a description of diagnostic light codes for troubleshooting problems with your computer, see "Diagnostic Lights" on page 100. 11 microphone connector Use the microphone connector to attach a personal computer microphone for voice or musical input into a sound or telephony program. 12 headphone connector Use the headphone connector to attach headphones. 13 diagnostic lights (4) Use the diagnostic lights to help you troubleshoot a problem with your computer (see "Diagnostic Lights" on page 100). 14 network link light The network link light is on when a good connection exists between a 10-Mbps, 100-Mbps, or 1000-Mbps (1-Gbps) network and the computer. About Your Computer 23