PortaPow USB Power Blocker - Stops Charging, Allows Data (Twin Pack)

I recently started using the PortaPow USB Power Blocker with my micro USB cable for my 3D printer, and I have to say, it's been a game-changer!This little gadget does an excellent job of preventing my printer from pulling too much power from my sonic pad, which could potentially damage it. It stops charging while still allowing data transfer, ensuring that my devices stay safe and sound.Installation was a breeze - I simply plugged it in between my printer and the sonic pad, and it started working right away. Plus, it's super compact, so it doesn't take up much space.Overall, I'm incredibly impressed with the PortaPow USB Power Blocker. It's a simple yet effective solution that gives me peace of mind knowing that my devices are protected. Five stars from me!

Works as expected, larger than it looks online.Keeps Rpi from powering my 3d printer board via usb.Initially I tried tape on the usb power pin but it was not reliable.

I always disliked having my Pi Zero 2 W backpower my Ender 3 when I had turned the printer off, and this solved that issue quick and easy. Same deal with a 3018 Pro CNC. It’s a simple fix and probably wildly overpriced for what it is, but no fuss and it just works!

These do just what I wanted them to do and they were spec-ed to do: block power but let data through. I'm using it to connect a Raspberry Pi Zero 2W to an Ender 3 V2 Neo 3d printer and it is imperative that each end provide its own power and that one end shouldn't try to power the other. It's nice to not have to depend on a sliver of electrical tape carefully placed inside the female USB connector to do that.

This product works as intended for blocking power on the usb, but did not work with the products I had wanted to use it with. But I was impressed with the how sturdy the build quality of this is.I own a Schiit Modius and Bifrost (gen 3 usb), both devices are recognized via usb with this device, but would not output anything. Both devices had independent power of the computers usb.The problem I wanted to solve is either EMI noise or a usb ground loop from a high power gaming computer. When either dac is connected via usb, they pick up a lot of electrical noise when the computer is in high power states. The noise comes through on the Modius even if on a different input, the computer usb has to be completely disconnected (seperate usb power via wall wart and optical from the computer are crystal clear). Unfortunately, the same noise is coming through to the DACs with the power blocked via this device... So the usb is dirty on just the data pins.I have ordered a slightly more expensive usb isolator and filter to try...

Converted my Creality printers to Klipper and these stop the raspberry pi from powering the MCU over USB. You can modify your USB cables but I wanted something with a little less jank. These cost a premium, but did exactly what I wanted them to do.

Excellent. Stops the Raspberry Pi from sending power to my printer as well as preventing undervoltage alerts in Octoprint! Get these for your printers!

These work awesome. Much better than trying to tape the connector for use on a 3d printer