Dell Latitude 5550 Owners Manual - Page 13

Air vents provide ventilation for your computer. Clogged air vents can cause overheating and can affect your computer's performance and potentially cause hardware issues. Keep the air vents clear of obstructions and clean them regularly to prevent the build-up of dust and dirt. For more information about cleaning air vents, search for articles in the Knowledge Base Resource at www.dell.com/support. Service Tag The service tag is a unique alphanumeric identifier that allows Dell service technicians to identify the hardware components in your computer and access warranty information. Figure 7. Image: Service Tag location Battery charge and status light The following table lists the battery charge and status light behavior of your Latitude 5550. Table 1. Battery charge and status light behavior Power Source LED Behavior AC Adapter Off AC Adapter Solid White Battery Off Battery Solid Amber (590+/-3 nm) System Power State S0 - S5 S0 - S5 S0 - S5 S0 - S5 Battery Charge Level Fully Charged < Fully Charged 11-100% < 10% ● S0 (ON) - System is turned on. ● S4 (Hibernate) - The system consumes the least power compared to all other sleep states. The system is almost at an OFF state, except for a trickle power. The context data is written to a hard drive. ● S5 (OFF) - The system is in a shutdown state. Views of Latitude 5550 13