Reference: RBD-1732
Raspberry Pi 4B/3B+/3B U100 UPS HAT Expansion Board with Cooling Fan
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The 2.1mm to 2.5mm DC Barrel Plug Adapter is a simple yet essential solution for connecting devices with different DC jack sizes. Many power supplies come with a 2.1mm plug, while certain devices require a 2.5mm jack — this 0.4mm difference can prevent a proper connection. With this adapter, you can easily convert your 2.1mm plug into a 2.5mm fit, making it compatible with devices that normally require a 5.5mm outer diameter and 2.5mm inner diameter plug. Its compact, durable design ensures a secure connection without compromising performance, making it a must-have accessory for hobbyists, engineers, and everyday users alike. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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Seamless conversion – adapts 2.1mm plug to fit 2.5mm jack instantly.
Universal compatibility – supports devices requiring 5.5mm OD / 2.5mm ID barrel jacks.
Time-saving solution – no need to purchase a new power supply.
Portable & lightweight – easy to carry in toolkits or project boxes.
Durable construction – built to withstand repeated insertions and long-term use.
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Powering electronic devices with mismatched DC barrel sizes.
Use in DIY electronics projects, robotics, and hobby circuits.
Suitable for testing and prototyping with multiple adapters.
Ideal for Arduino, Raspberry Pi accessories, and other development boards.
Great backup accessory for engineers, technicians, and makers.
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| General Specifications | |
| Connector Type | DC Barrel Plug Adapter |
| Input Plug Size | 5.5mm OD / 2.1mm ID |
| Output Jack Size | 5.5mm OD / 2.5mm ID |
| Function | Converts 2.1mm plug to 2.5mm jack |
| Compatibility | Works with DC wall adapters (2.1mm) |
| Build Quality | Durable, lightweight design |
| Shipment Weight | 0.0137 kg |
| Shipment Dimensions | 10 × 6 × 5 cm |
Please allow 5% measuring deviation due to manual measurement.
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1 x 2.1mm to 2.5mm DC Barrel Plug Adapter
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Reference: RBD-1732
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