USB to DC 5.5x2.1mm Barrel Jack Power Cable 1M | 5V

Power Your Small Devices Straight from a USB Port

This USB to DC 5.5mm x 2.1mm Barrel Jack Power Cable is the simple, reliable solution for powering small electronics and smart devices directly from any standard USB port. No bulky adapters or wall outlets needed — just plug in and power up. Perfect for routers, LED strips, fans, security cameras, Arduino boards, and any device that uses a 5.5mm outer / 2.1mm inner DC barrel connector.

Key Features

• Universal USB Power: Draws clean 5V DC directly from any standard USB Type-A port — laptop, power bank, or USB hub.
• Barrel Jack Connector: Terminates in a 5.5mm (outer) / 2.1mm (inner) male coaxial barrel plug with positive center pin — one of the most common DC power connectors.
• 1 Metre Length: Practical 1m cord gives you enough reach without cable clutter.
• CE Certified: Meets European safety and compliance standards for your peace of mind.
• No High-Concern Chemicals: Safe materials — no restricted or hazardous substances.
• Compact & Portable: Lightweight and flexible — ideal for travel, desk setups, and DIY projects.

Specifications

• Cable Type: USB Type-A Male to DC 5.5mm × 2.1mm Male Barrel Plug
• Voltage Output: 5V DC
• Length: 1 Metre (approx. 3.3 ft)
• Color: Black
• Connector Size: 5.5mm outer diameter / 2.1mm inner diameter
• Polarity: Positive center pin
• Certification: CE
• Package Contents: 1 × USB to DC Power Cable
• Country of Origin: Made in Mainland China

Who Is This For?

This cable is ideal for hobbyists, makers, and everyday users who want to power devices rated at 5V DC using a USB source. Common compatible devices include:

• Arduino boards and DIY electronics projects
• Mini routers and network switches
• LED strip controllers and lighting modules
• Small desktop fans and cooling devices
• CCTV cameras and security modules rated at 5V

Always check your device's manual or manufacturer specifications to confirm it requires 5V DC with a 5.5mm × 2.1mm barrel connector before connecting.

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Further Reading

For guidance on safe use of USB-powered electronics and understanding connector standards, visit the U.S. Consumer Product Safety Commission (CPSC).

Learn more: Power cable

Frequently Asked Questions

Q: What devices are compatible with this USB to DC 5.5mm x 2.1mm power cable?

A: This cable is compatible with any device that is powered by 5V DC and uses a 5.5mm outer / 2.1mm inner barrel jack connector. Common examples include Arduino boards, mini routers, LED strip controllers, small fans, and low-power security cameras. Always verify your device's voltage and connector size before use.

Q: Can I use this cable with a power bank or USB wall charger?

A: Yes! As long as the USB source (power bank, laptop port, USB wall charger, or USB hub) provides a standard 5V output, this cable will work perfectly. It's a great way to power your devices on the go using a portable power bank.

Q: What is the polarity of the DC barrel plug on this cable?

A: The barrel plug uses a positive center pin configuration, which is the most common standard for DC barrel connectors. Confirm this matches your device's requirements before connecting.

Q: How long is this USB to DC power cable?

A: The cable is 1 metre (approximately 3.3 feet) long, providing a practical length for most desktop and travel setups without excessive cable clutter.