ProTechTrader 3-12V Universal Power Adapter with USB Outlet

3-12V Universal Power Adapter

New More Powerful 30W Version

Up to 2.5 amps!


Input: AC 100V-240V

Output: 3V/4.5V/5V/6V/7.5V/9V/12V 2500ma

USB output: 5V 1A

***Reversible DC Polarity***  

This Adapter has the advanced feature of supporting both tip Negative (-) and tip Positive (+) Polarities.  This makes it compatible with many more devices then similar models from competitors.


  • Multi-Voltage 12 Watt (12w/1-amp) replacement switching power adapter supply compatible with 1000s of small electronic devices using requiring 3 volt, 4.5 volt, 5 volt, 6 volt, 9 volt, or 12 volt up to 1.0a or 12 watts including many Electronics, Tablets, Routers, Smart Phones, Speakers, Monitors, TVs, LCDs, Cameras & Other USB Port Charging up to 12watt 1000ma with US 120 volt Plug

  • Includes 8 Interchangeable DC Plugs/Tips of the most popular sizes: 5.5mm x 2.5mm / 5.0mm x 2.1mm / 3.5mm x 1.35mm / 4.0mm x 1.7mm / 2.5mm / 3.5mm / 5.5mm x 2.1mm / 2.5mm x 0.7mm. Please make sure your device is one of these size jacks on it for proper fit and the standard center positive polarity. New Upgraded model comes with a USB port built in

  • NEW model now has REVERSIBLE DC Tip Polarization - Both Center/Inside Positive (+) Outer/Outside Negative (-) and Center/Inside Negative (-) Outer/Outside Positive (+) Can be Set by Removing Tip and Placing it in Opposite Position. This allows for maximum device compatibility as it can be set to operate in both center tip pos and center tip neg polarities. Please be sure to verify your device polarity, tip size and voltage before purchasing.

  • Voltage is easy to change by the switch on the side of the adapter. Be sure you're using the correct VOLTAGE & POLARITY for your device before plugging it in. If you are not sure please use the "Customer Questions & Answers" section below before purchasing and provide your product brand, model, and part number if available and we will try to help verify your device's power requirements.

  • Input: 110v - 220v AC / Output: 3v - 12v DC - Maximum Current of up to 1a or 12 watts - If your device requires less power, such as 200ma, 300ma, 400ma, 500ma, 600ma, 750ma or any other up to 1000ma it will work with this adapter with a matching tip and proper voltage/polarization



Product Description

ProTechTrader ™ Universal AC/DC Power Adapter with Multiple Voltage Output (3v-12v) Allows you to easily replace your old wall wort transformer and allows you the flexibility to use it with multiple devices featuring 8 interchangeable DC tips, with compatibility for 1000s of small electronic devices it can save you a lot of headaches finding the correct plug. The new upgraded model includes a USB port built into the base for convenient charging your Apple iPhone, iPad, Samsung Galaxy Smart Phones, and other Android smartphones & tablets utilizing the industry standard 5 volt USB charging ports along with reversible tip polarity. Both Center/Inside Positive (+) Outer/Outside Negative (-) and Center/Inside Negative (-) Outer/Outside Positive (+) Can be Set by Removing Tip and Placing it in an Opposite Position. 

***It is important you first verify your device's power requirements match the possible voltages available and plugs included with this item before purchasing. All electronics will not be compatible. If you are uncertain make sure you ask first before purchasing.

Input: 110v - 220v AC 

Output: 3v - 12v DC 
Max Current: 2.5 amp through tip and 1.0 amps through USB 
Polarity: Center Positive or Center Negative - BE SURE TO INSTALL TIP CORRECTLY MATCHING POLARITY ON YOUR DEVICE. 
Included Tip Sizes:

• 2.5MM (Micro Headphone/Phono Style Power Connector) 

• 3.5MM (Mini 1/8in Headphone / Phono Style Power Connector) 

• 2.5mm x 0.7mm (2.5*0.7mm)

• 3.5mm x 1.35mm (3.5*1.35mm)

• 4.0mm x 1.7mm (4.0*1.7mm)

• 5.5mm x 2.1mm (5.5*2.1mm)

• 5.0mm x 2.1mm (5.0*2.1mm)

• 5.5mm x 2.5mm (5.5*2.5mm)