Dell OptiPlex 5055 Tower, Owner'S Manual

Page: 72 / 80

Controls and lights
Table 27. Controls and lights
Feature Specification
Front of the computer
Power button light White light — Solid white light indicates power-on state; slow blinking white
light indicates sleep state of the computer.
Drive activity light White light — Slow blinking white light indicates that the computer is
reading data from or writing data to the hard drive.
Back of the computer
Link integrity light on integrated network adapter Green — A 10 Mbps connection exists between the network and the
computer.
Green — A 100 Mbps connection exists between the network and the
computer.
Orange — A 1000 Mbps connection exists between the network and the
computer.
Off (no light) — The computer is not detecting a physical connection to the
network.
Network activity light on integrated network adapter Yellow light — A breathing yellow light indicates that network activity is
present.
Power supply diagnostic light Green light — The power supply is turned On and is functional. The power
cable must be connected to the power connector (at the back of the
computer) and the electrical outlet.
Power
Table 28. Power Specifications
Feature Specification
Wattage 240 W
AC input voltage range 90 – 264 Vac
AC input current (low ac range / high ac
range) 4 A/ 2 A
AC input frequency 47 Hz/ 63 Hz
Coin cell battery 3 V CR2032 lithium-coin-cell
72 System setup