HP ProDesk 400 G3 Maintenance & Service Guide - Page 10
Front panel components
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Front panel components Drive configuration may vary by model. Some models have a bezel blank covering the slim optical drive bay. 1 Slim Optical Drive (optional) 5 Headphone Connector 2 SD Card Reader (optional) 6 Hard Drive Activity Light 3 USB 3.0 Ports (blue) 7 Dual-State Power Button 4 Microphone Connector 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 POST error messages and diagnostic front panel LEDs and audible codes on page 92 to interpret the code. 2 Chapter 1 Product features
![](/manual_guide/products/hewlettpackard-prodesk-400-g3-maintenance-service-guide-8a2baa3/10.png)
Front panel components
Drive
configuration
may vary by model. Some models have a bezel blank covering the slim optical drive bay.
1
Slim Optical Drive (optional)
5
Headphone Connector
2
SD Card Reader (optional)
6
Hard Drive Activity Light
3
USB 3.0 Ports (blue)
7
Dual-State Power Button
4
Microphone Connector
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
POST error messages and diagnostic front panel LEDs and
audible codes
on page
92
to interpret the code.
2
Chapter 1
Product features