Dell OptiPlex GX620 User's Guide

About this manual

This guide introduces the Dell OptiPlex GX620 mini tower computer, describing the front and back panel connectors, indicator lights, and safety precautions. It explains the function of each port (USB, LAN, audio, video, serial, etc.) and how to use the power button and power‑light indicators.

The manual also details internal components such as the system board, CPU, memory slots, PCI/PCI‑Express slots, SATA connectors, and jumper settings. Instructions for opening the case, setting the manual voltage selector, and configuring passwords are included.

What's inside

• About Your Mini Tower Computer
• Inside Your Computer
• Back‑Panel Connectors
• Front‑Panel Connectors
• Jumper Settings
• System Board Components
• Diagnostic Lights

Specifications

Frequently asked questions

How do I turn on the Dell OptiPlex GX620?

Press the power button; do not hold it for six seconds or longer, as that forces a hard shutdown.

How should I set the manual voltage selection switch?

Set the switch to the 115‑V position, even if the local AC supply is 100 V.