
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