Adjustable Power Adapter 3V–12V 30W Universal USB Charger

Adjustable Universal Power Adapter – 3V to 12V, 30W with USB 2.1A

Power virtually any low-voltage device with this versatile adjustable switching power supply. Covering seven selectable DC output voltages — 3V, 4.5V, 5V, 6V, 7.5V, 9V, and 12V — plus a dedicated USB 2.1A port, this adapter is the one charger that handles it all. Compatible with US, EU, UK, and AU plug standards, it travels with you wherever you go.

Made in Mainland China.

Key Features

• 7 Selectable Voltage Settings: 3V / 4.5V / 5V / 6V / 7.5V / 9V / 12V — dial in exactly what your device needs
• 30W Max Output Power: Up to ≤37.5W switching capacity for stable, consistent delivery
• USB 2.1A Port: Simultaneously charge smartphones, tablets, or other USB-powered devices
• Intelligent Charging Circuit: Built-in smart protection for safe, efficient operation
• Universal Plug Compatibility: Includes US, EU, UK, and AU adapters — one charger for home and travel
• Wide Device Compatibility: Suitable for routers, LED strips, small electronics, radios, toys, fans, and more
• Compact Switch-Mode Design: Lightweight and efficient switching power supply technology

Specifications

• DC Output Voltages: 3V, 4.5V, 5V, 6V, 7.5V, 9V, 12V (selectable)
• Max Output Power: 30W (≤37.5W)
• USB Port: 2.1A
• Plug Types: US / EU / UK / AU
• Voltage Range: Low voltage (below 75V DC / below 50V AC)
• Intelligent Charge: Yes
• Country of Origin: Mainland China

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Learn more: ENERGY STAR product efficiency guidance

Frequently Asked Questions

Q: What voltage settings does this adjustable power adapter support?

A: This universal power adapter supports seven selectable DC output voltages: 3V, 4.5V, 5V, 6V, 7.5V, 9V, and 12V. Simply switch to the voltage that matches your device's requirement for safe and reliable power delivery.

Q: Can I use this adjustable power supply in other countries?

A: Yes! This switching power adapter comes with interchangeable plug heads for US, EU, UK, and AU outlet standards, making it ideal for international travel or use with devices from different regions.

Q: What devices can I power with this universal charger?

A: This adapter is compatible with a wide range of low-voltage DC-powered devices, including routers, LED strips, radios, small fans, electronics kits, toy vehicles, and more — any device that operates between 3V and 12V DC and requires 30W or less. The additional USB 2.1A port can simultaneously charge smartphones and tablets.