Front panel components (ProDesk 400)
1 Dual-State Power Button 4 Microphone Connector
2 Hard Drive Activity Light 5 Headphone Connector
3 USB 3.0 Ports
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. Refer to the Maintenance and Service Guide to interpret the code.
Front panel components (ProDesk 400) 3