Which Power Supply Should You Order for Your LED Sign? HSP-300-5 vs. RSP-320-5 Explained

If you’ve been told you need a replacement power supply for your LED sign, you’re likely wondering:
“Which model do I need—HSP-300-5 or RSP-320-5?”

At LED Sign City, we make it easy to figure that out. Here’s a quick breakdown to help you identify the right power supply for your sign—and avoid delays.

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🔧 The Two Main Power Supply Models

1. HSP-300-5

   • 300W, 5V, 60A

   • Convection-cooled (fanless) – no moving parts

   • High efficiency: ~87%

   • Voltage tolerance: ±3%

   • Recommended for newer signs (2020 and beyond)

2. RSP-320-5

   • 320W, 5V, 60A

   • Fan-cooled – contains moving parts

   • Was used in older sign models, typically prior to 2019

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🛠️ How to Know Which Power Supply You Need

If your sign was built after 2020, especially if purchased from LED Sign City, chances are you need the HSP-300-5. That’s because we’ve standardized all of our signs to use convection-cooled (fanless) power supplies for improved reliability and reduced maintenance.

In fact, the RSP-320-5 hasn’t been used in any of our new builds since 2019.

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🔍 Not Sure About Your Sign’s Build Year?

Here’s what to do:

• Check your original invoice for the model or build year.

• Look inside the sign (if accessible) for the power supply label.

• Or just contact us with your order number—we’ll help confirm the correct part.

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🚫 Why Picking the Wrong Power Supply Matters

Using a fan-based power supply in a fanless design can lead to:

• Overheating

• Shortened component life

• Compatibility issues

Always double-check before ordering!

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✅ In Summary

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📦 Ready to Order?

Visit our Parts & Accessories Page or reach out to our support team. We’ll help confirm the model and get the replacement part shipped as quickly as possible.

Still not sure?
📩 Email us at support@ledsigncity.com or 📞 Call us at  (866) 343-4011