Dell OptiPlex U719F Setup And Quick Reference Manual page 28

Connectors (continued)
Front panel USB
Front panel audio HDA
header
Processor
Memory
Power 12 V
Power
LAN on motherboard
(LOM)
Controls and Lights
Front of computer:
Power button
Power light
Drive activity light
28
Specifications — Mini Tower Computer
two 10-pin connectors
one 10-pin connector
one 775-pin connector
two 240-pin connectors
one 4-pin connector
one 24-pin connector
through RJ-45 connector on back panel
push button
• green light — Blinking green in sleep state; solid
green for power-on state
• amber light — The blinking amber indicates a
problem with the system board. A solid amber
light when the computer does not start indicates
that the system board cannot start initialization.
This indication could be a system board or a
power supply problem (see "Power Problems" on
page 37).
green light — A blinking green light indicates the
computer is reading data from or writing data to the
SATA hard drive or CD/DVD.