Compaq CQ20 manual Front components, Left-side components

External component identification

Front components

Item	Component	Description
1	Drive light	■ Blinking green: The hard drive or optical drive is being accessed.
		■ Amber: (select models only) HP 3D DriveGaurd has temporarily parked the
		hard drive.
2	Audio-in (microphone) jack	Connects an optional computer headset microphone, stereo array
		microphone, or monaural microphone.
3	Audio-out (headphone) jack	Produces sound when connected to optional powered stereo speakers,
		headphones, ear buds, a headset, or television audio.

Left-side components

Item	Component	Function
1	Battery light	■ Amber: A battery is charging.
		■ Turquoise: A battery is close to full charge capacity.
		■ Blinking amber: A battery that is the only available power source has
		reached a low battery level. When the battery reaches a critical battery
		level, the battery light begins blinking rapidly.
		■ Off: If the computer is plugged into an external power source, the light turns
		off when all batteries in the computer are fully charged. If the computer is
		not plugged into an external power source, the light stays off until the
		battery reaches a low battery level.
2	Power connector	Connects an AC adapter.
3	RJ-45 (network) jack	Connects a network cable.
4	RJ-11 (modem) jack	Connects a modem cable.
5	USB port	Connects an optional USB device.
6	Optical drive	Reads optical discs and, on select models, also writes to optical discs.

2–6 Maintenance and Service Guide