Dell 531S owner manual 170, Controls and Lights

Connectors (continued)

Front panel audio HDA	one 10-pin connector
header
Processor	one 940-pin connector
Memory	four 240-pin connectors
Power 12V	one 4-pin connector
Power	one 24-pin connector
Controls and Lights
Front of computer:
Power button	push button
Power light	blue light — Blinking blue in sleep state; solid blue
	for power-on state
	amber light — The blinking amber indicates a
	problem with the system board. A solid amber light
	when the system does not boot indicates that the
	system board cannot start initialization. This could be
	a system board or a power supply problem (see "Power
	Problems" on page 70).
Drive activity light	blue light — A blinking blue light indicates the
	computer is reading data from or writing data to the
	SATA hard drive, CD, DVD or HDD.
Rear of computer:
Link integrity light (on	green light — A good connection exists between the
integrated network adapter)	network and the computer.
	off (no light) — The computer is not detecting a
	physical connection to the network.
Network activity light (on	yellow blinking light
integrated network adapter)

170

Appendix