USB to DC Power Plug Adapter Set – Multi-Size Barrel Connectors

Keep all your devices powered up with this versatile USB to DC Power Plug Adapter Set. Featuring multiple barrel connector sizes — 3.5×1.35mm, 4.0×1.7mm, 5.5×2.1mm, 5.5×2.5mm, and more — this multi-pack makes it easy to match the right connector to virtually any small electronic device that charges via a DC barrel jack.

Whether you're powering routers, LED strips, portable speakers, security cameras, or other USB-chargeable gadgets, this adapter set eliminates the frustration of mismatched plugs. Simply connect your USB power source to the adapter, select the correct barrel tip, and you're ready to go.

Key Features

• Multiple Connector Sizes: Includes 3.5×1.35mm, 4.0×1.7mm, 5.5×2.1mm, 5.5×2.5mm, and more — compatible with a wide range of devices
• USB Input: Connects to any standard USB power source (power bank, wall adapter, PC port) for flexible charging options
• Compact & Portable: Lightweight and small enough to toss in your bag, travel kit, or toolbox
• Durable Construction: Built with reliable contacts for a stable, consistent power connection
• Plug-and-Play: No tools or setup required — ready to use straight out of the box
• Great Value Multi-Pack: Comes with 15 pieces so you always have the right adapter on hand

Who Is This For?

This adapter set is ideal for tech enthusiasts, home office users, travelers, and anyone who manages multiple devices with DC barrel connectors. It's a practical addition to any cable organizer or electronics toolkit.

Specifications

• Input: USB (Type-A)
• Output Connector Sizes: 3.5×1.35mm, 4.0×1.7mm, 5.5×2.1mm, 5.5×2.5mm (multi-size set)
• Quantity: 15 pieces per set
• Brand: Qme

For general guidance on electrical connector safety and standards, visit the U.S. Consumer Product Safety Commission (CPSC).

Frequently Asked Questions

Q: What connector sizes does this USB to DC Power Plug Adapter Set include?

A: This set includes multiple DC barrel connector sizes, including 3.5×1.35mm, 4.0×1.7mm, 5.5×2.1mm, and 5.5×2.5mm, making it compatible with a wide variety of small electronic devices that use DC barrel jack inputs.

Q: What devices can I use this USB DC charger adapter with?

A: These adapters are suitable for powering or charging devices that accept a DC barrel jack input — such as routers, LED controllers, portable fans, security cameras, small speakers, and other USB-powered electronics. Always check your device's required voltage and polarity before use.

Q: Does this adapter work with any USB power source?

A: Yes — the USB input end is compatible with standard USB Type-A power sources including wall chargers, power banks, and computer USB ports. Ensure your power source provides adequate current for your specific device.

Q: How many adapters come in this set?

A: This set contains 15 pieces, giving you a comprehensive assortment of connector sizes so you're prepared for multiple devices at once or as a handy backup supply.