Front panel components
Microtower (model 400/490)
Drive configuration may vary by model. Some models have a bezel blank covering one or more drive
bays.
1 5.25-inch Optical Drive (optional) 6 Microphone Connector
2 5.25-inch Half-Height Drive Bay (behind bezel) 7 Hard Drive Activity Light
3 3.5-inch Media Card Reader (optional) 8 USB 3.0 Ports (blue)
4 Dual-State Power Button 9 Headphone Connector
5 USB 2.0 Ports (black)
NOTE: The Power On Light is normally white when the power is on. If it is flashing red, there is a problem with the
computer and it is displaying a diagnostic code.
Front panel components
3
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