Dell OptiPlex U719F Setup And Quick Reference Manual page 29

Controls and Lights (continued)
Back of computer:
Link integrity light (on
integrated network adapter)
Network activity light (on
integrated network adapter)
Power
DC power supply:
Wattage
Maximum heat dissipation
(MHD)
Voltage (see the safety
information that shipped
with your computer for
important voltage setting
information)
Coin-cell battery
• green light — A good connection with a speed of
10M exists between the network and the
computer.
• orange light — A better connection with a speed
of 100M exists between the network and the
computer.
• yellow light — An excellent connection with a
speed of 1000M exists between the network and
the computer.
• off (no light) — The computer is not detecting a
physical connection to the network.
• yellow blinking light — Indicates network
activity.
off (no light) — Indicates no network activity.
•
255 W
for 255-W power supply: 138-W MHD
NOTE:
Heat dissipation is calculated by using the
power supply wattage rating.
115/230 VAC, 50/60 Hz
3-V CR2032 lithium coin cell
Specifications — Mini Tower Computer
29