Original Power Supply :
The Raspberry Pi Official Power Supply (27W USB-C) is designed to provide stable and reliable power for high-performance Raspberry Pi boards, including Raspberry Pi 5. It delivers 5.1V at up to 5A, ensuring smooth operation of USB devices, peripherals, and demanding applications without voltage drops. Built-in safety protections guard against over-current, over-voltage, and short circuits, making it ideal for long-term and professional use.
Key Highlights
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Output: 5.1V ⎓ 5A (27W)
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USB-C connector
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Stable power for Raspberry Pi 5 & heavy workloads
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Official, safe, and reliable design
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Supports connected USB peripherals
Video Description:
Power Requirements of Raspberry Pi 5B
- Official Power Supply:
- The Raspberry Pi 5 Model B is designed to work with the official USB-C 5.1V/5A power supply, which provides 25.5W of power.
- General Compatibility:
- Any USB-C adapter providing at least 5.1V and 5A is suitable for the Raspberry Pi 5B.
- A 27W adapter meets this requirement, provided:
- It delivers a stable 5.1V output.
- It supports sufficient current (at least 5A).
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Compatibility of a 27W Adapter
If you’re using a 27W adapter, ensure the following:
- Voltage and Current Rating:
- Confirm that it provides a 5.1V output.
- The current must be at least 5A to handle the Raspberry Pi 5B’s power needs, especially under load with peripherals.
- USB Power Delivery (USB-PD):
- If your adapter supports USB-PD (Power Delivery), ensure it negotiates a 5V/5A mode.
- Some high-wattage adapters (e.g., 27W or 30W) may only provide 5V at 3A by default, which can cause undervoltage issues.
- Cable Quality:
- Use a high-quality USB-C cable capable of handling 5A current without resistance losses.
- Look for cables rated for 100W (20V/5A) to ensure compatibility.
- Voltage and Current Rating:



















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