HP Tc4400 Maintenance and Service Guide - Page 13

Product Description Item 3 4 5 6 7 Table 1-1 Front Components (Continued) Component Function Battery light ■ Amber: A battery pack is charging. ■ Green: A battery pack is close to full charge capacity. ■ Blinking amber: A battery pack that is the only available power source has reached a low-battery condition. When the battery pack reaches a critical low-battery condition, the battery light begins blinking more quickly. ■ Off: If the computer is connected to an external power source, the light is turned off when all batteries in the computer are fully charged. If the computer is not connected to an external power source, the light is turned off until the battery pack reaches a low-battery condition, when the light begins blinking amber. Drive light ■ Blinking green: The hard drive or optical drive is being accessed. ■ Amber: HP Mobile Data Protection has temporarily parked the hard drive. Infrared port Provides wireless communication between the computer and an optional IrDA-compliant device. Display release button Opens the tablet PC. Fingerprint reader Allows a fingerprint logon to Windows instead of using a password. Maintenance and Service Guide 1-7