Product Reviews3vdc -12 volt Universal AC/DC Power Adapter USB Port | 8 Reversible Polarity or

Handy Multi-Voltage AC to DC Adapter - Nice to have around!

I have been able to use this adapter for multiple devices without a problem. One of the nice, and rare features of this adapter is the ability to reverse the polarity and set it to "Tip Negative" (meaning the center tip is negative and the outside ring is positive. This is opposite of most modern electronics, but it allows this adapter to be used for many vintage electronics from the 80s as well as a lot of music equipment that is configured for a tip negative adapter.

With the ability to use the adapter as tip positive as well I used it for LED light strips, testing a netbook, charging a quadrocopter (USB port is a bonus), as well as my cell phone. Just make sure you set the tip in the right direction and have it set on the correct voltage. It provides up to 1000ma (1-amp) of current so any device that requires less then that is fair game!Read full review...

Verified purchase: No

More flexible than your average adjustable power supply

Adjustable power supplies are a dime a dozen these days. However, it is rare to find one that not only allows you to adjust the plug size, but also the polarization. I decided to purchase this after a frustrating experience of trying to find a replacement power supply or cable with a center-negative plug, which are surprisingly rare. So far, this has worked as advertised.Read full review...

Verified purchase:  Yes | Condition: new | Sold by: protechtrader

Quality adapter!

Voltage tested with Fluke 87 was very good. Was a nice "click" between voltages on the adapter, which made it easy to select the proper voltage. Worked very well for the battery elimination I needed. I would have liked a longer wire. Very satisfied with the adapter.Read full review...

Verified purchase:  Yes | Condition: new | Sold by: protechtrader

Great product, highly recommend

This product is working well. I was looking for a replacement power supply for an older Lemax Christmas Village piece and found out that they quit making those power supplies over 10 years ago. The reason I chose this adapter was it had a great variety of tips that can be used for many different applications. I'm very happy with my purchase.Read full review...

Verified purchase:  Yes | Condition: new | Sold by: protechtrader

Great value & well made

This universal power adapter provides enough currents for vast applications. Furthermore, it allows the polarity to be reversed which is very useful for some non-standard electronic devices. I bought this adapter mainly for my Brother P-Touch label maker which requires the polarity to be changed. The adapter works great so far and appears to be well made.Read full review...

Verified purchase:  Yes | Condition: new | Sold by: protechtrader

Multi-Voltage adapter does it job and is handy to have around.

I bought this to power my radio and it works perfect. Set the voltage and put on the matching tip and it did the job. Knowing that I can change the voltage as needed I found it really handy as I am able to use it with other things around the house.Read full review...

Verified purchase: No

Great Features!

This product is difficult to find. It has a range of adapter settings which makes it very versatile. It also has a plethora of port tips which enables it to plug into a variety of items. Great product!Read full review...

Verified purchase:  Yes | Condition: new | Sold by: protechtrader

Perfect Fit

Exactly what I needed. So far is working excellent.

Verified purchase:  Yes | Condition: new | Sold by: protechtrader

Awesome adapter

Buy it. Works great shipping was super quick. 3 day turnaround
Love the reverse polarity.....

Verified purchase:  Yes | Condition: new | Sold by: protechtrader

Very handy when you loose your oem plugs

Verified purchase:  Yes | Condition: new | Sold by: protechtrader