dell optiplex 790 power supply

dell optiplex 790 power supply.

  • Wattage: 240W–320W (depending on model)

  • Input: 100–240V AC

  • Form Factor: Dell-specific SFF, MT, or USFF units

  • Efficiency: 80 PLUS Bronze Certified

  • Connectors: 24-pin ATX, 4-pin CPU, SATA, Molex

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Description

Dell OptiPlex 790 Power Supply – Reliable Replacement for Long-Term Stability

Power Up Your Dell OptiPlex 790 the Right Way

Looking for a high-quality Dell OptiPlex 790 power supply? We offer reliable, fully compatible replacement units designed specifically for the OptiPlex 790 series—whether you’re using the Mini Tower, Small Form Factor (SFF), or Ultra Small Form Factor (USFF).

Power your system with confidence. No compatibility issues. No compromises.

Tailored for Your Dell OptiPlex 790 Model

Dell’s OptiPlex 790 came in different form factors, each requiring a specific PSU type. Here’s a quick guide:

  • Mini Tower (MT): 265W–320W ATX-style PSU

  • Small Form Factor (SFF): 240W proprietary SFF PSU

  • Ultra Small Form Factor (USFF): External power adapter

Make sure you match the PSU to your exact chassis type.

Specifications You Can Trust

Our OptiPlex 790-compatible power supplies are built to last, offering:

  • Wattage: 240W–320W (depending on model)

  • Input: 100–240V AC

  • Form Factor: Dell-specific SFF, MT, or USFF units

  • Efficiency: 80 PLUS Bronze Certified

  • Connectors: 24-pin ATX, 4-pin CPU, SATA, Molex

Supports standard CPUs, HDDs, SSDs, and some low-profile GPUs.

When Should You Replace the PSU?

Your Dell might be showing signs of a failing power supply. Here are red flags:

  • Random system shutdowns

  • PC doesn’t power on

  • Burning smell or excessive heat

  • PSU fan failure or loud noises

Replacing the PSU early protects your motherboard, storage, and other components.

Ideal for Office, School, and Home Use

The OptiPlex 790 remains a reliable workhorse in business and education settings. A strong power supply ensures:

  • Smooth multitasking

  • Dependable uptime

  • Stable performance under load

From Excel to email to light creative work—this PSU keeps everything running efficiently.

Easy Installation with No Guesswork

Dell systems are known for clean design and tool-less access. Replacing the PSU is quick:

  1. Open the case (thumb screws or release latch)

  2. Disconnect the old PSU cables

  3. Unscrew and remove the PSU

  4. Insert the new PSU and reconnect cables

  5. Power up and test—done!

Even first-time upgraders can do it in under 15 minutes.

Why Buy From a Trusted Source?

Not all PSUs are created equal. Cheap knockoffs often lack proper voltage regulation, causing long-term damage.

We guarantee:

  • 100% compatibility with Dell systems

  • Clean, tested units

  • Prompt shipping and customer support

  • Return and warranty coverage

Buy once. Get it right.

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