Dell OptiPlex 755 - Manual (Page 51)

Quick Reference Guide
51
Back View
1 diagnostic lights See "Diagnostic Lights" on page 66 for a description
of light codes that can help you troubleshoot
problems with your computer.
2 computer cover release
knob Rotate this knob in a clockwise direction to remove
the cover.
3 back panel connectors See "Back Panel Connectors" on page 52 for a
description of the connectors for your computer.
4 power connector Insert the AC power adapter plug.
5 vents The vents help prevent your computer from
overheating. To ensure proper ventilation, do not
block these cooling vents.
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4 5