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PortaPow USB Power Blocker - Only Data, No Power

4.2 out of 5 stars 646 ratings
鶹's Choice highlights highly rated, well-priced products available to ship immediately.
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Purchase options and add-ons

Brand PortaPow
Connector type USB Type A
Cable type USB
Compatible devices Personal Computer
Special feature Tangle Free

About this item

  • This is NOT a data blocker, see PortaPow's other products if that is what you need
  • This a USB-A male to female adaptor which has the D+, D- and 0V connected but the 5V disconnected, so power cannot pass through.
  • Note a power blocker is not compatible with smartphones, tablets and many other devices. Please read the reviews to see situations where it does and does not work.
  • Useful for specialist applications such as 3D Printers and Raspberry Pi where providing power results in undesirable effects
  • Supports USB 2.0 Data Transfer.
› See more product details

Product details

  • Parcel Dimensions ‏ : ‎ 7.4 x 4.9 x 1.2 cm; 20 g
  • Date First Available ‏ : ‎ Aug. 26 2021
  • Manufacturer ‏ : ‎ PortaPow
  • ASIN ‏ : ‎ B094FYL9QT
  • Item model number ‏ : ‎ PP_PBC1
  • Customer Reviews:
    4.2 out of 5 stars 646 ratings

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Customer reviews

4.2 out of 5 stars
646 global ratings

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Top reviews from Canada

  • jean dubeau
    5.0 out of 5 stars USB Power blocker
    Reviewed in Canada on May 11, 2025
    Verified Purchase
    Fonctionne bien avec le CarPlay empêche de connecter quand l’alimentation est coupé sur ioniq 5
    Helpful
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  • Scott
    5.0 out of 5 stars They Work!
    Reviewed in Canada on July 5, 2024
    Verified Purchase
    These block power from reaching whatever you have connected to USB. It just transports the data. So if you have something connected that needs power, this will cause it not to work. This is good for preventing noise transfer over USB especially in audio applications.
    Helpful
     Report
  • dj
    5.0 out of 5 stars Worked Prefectly
    Reviewed in Canada on September 21, 2024
    Verified Purchase
    Use for my Ender 3 V2 connected to OctoPrint so the display wasn't on all the time. Nice clean solution.
    Helpful
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  • Nik Nikolaidis
    1.0 out of 5 stars I had to return it.
    Reviewed in Canada on April 1, 2025
    Verified Purchase
    Arrived DOA. Nothing passed through. No data, no power. Had to return. I bought to use cel phone in a car with android auto through cable and didn't want to overcharge the phone.
    Helpful
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  • JonSnow
    4.0 out of 5 stars Does what it says
    Reviewed in Canada on February 27, 2024
    Verified Purchase
    I got tired of using tape or 3d printing a 5v isolator and didn't want to rip apart a usb cable.

    Tested with a USB power meter connected to a phone and was unable to charge it, the power meter showed 0A. This tells you there is nothing suspicious about the adapter even though you can clearly see the PCB.
    Helpful
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  • 鶹 customer
    5.0 out of 5 stars Used for octoprint and ender
    Reviewed in Canada on July 11, 2024
    Verified Purchase
    This did the exact thing I needed, blocked power from my pi to my printer so it can be properly shut down.

    Works exactly as expected.
    Helpful
     Report
  • Travis
    5.0 out of 5 stars Ground loop issues no more
    Reviewed in Canada on February 19, 2024
    Verified Purchase
    When my Nord Stage was plugged into my PC via USB, it would generate a hum through the PC speakers. After installing the USB power blocker between my Keyboad and USB port, it completely eliminated the hum!
    One person found this helpful
    Helpful
     Report
  • Harper
    5.0 out of 5 stars Works Great for 3D Printers!
    Reviewed in Canada on June 2, 2023
    Verified Purchase
    PortaPow USB Power Blocker - Only Data, No Power

    It works great and keeps my printers from trying to run on USB 5v when they have no AC power. Precisely what I was looking for, tape and inserts would work temporarily but the second they needed to be moved it was a huge pain, this is hassle-free. Worth $10 CAD!
    2 people found this helpful
    Helpful
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Top reviews from other countries

Translate all reviews to English
  • édz
    5.0 out of 5 stars ça marche
    Reviewed in France on April 7, 2025
    Verified Purchase
    Fait parti d'un petit montage dans la voiture pour alimenter le boitier Android Auto sans fil. Le boitier est bien alimenté uniquement quand le moteur tourne. (la connexion se rétablissait avec le téléphone quand je sortait pour aller dans le jardin ou que je bricolais dans le garage). Problème résolu, ça fonctionne depuis 15 jours.
    Report
  • Christian Sjöström
    5.0 out of 5 stars Perfekt till min Raspberry pi och 3D printer
    Reviewed in Sweden on March 3, 2024
    Verified Purchase
    Kör Octopi / Octoprint med min Raspberry Pi till min 3D printer. Denna blockerar strömöverföring via USB vilket var exakt det jag var ute efter. Produkten skulle kunna vara ännu mindre i storlek, om man får önska något.
    Report
  • José B.
    5.0 out of 5 stars Cumple con su función perfectamente
    Reviewed in Spain on July 15, 2024
    Verified Purchase
    Bloquea de manera comprobada la energía del puerto USB del ordenador, permitiendo alimentar independientemente del ruido eléctrico del puerto el cable conectado al conversor digital.
    Report
  • Kothgassner
    5.0 out of 5 stars Sehr kluges Produkt
    Reviewed in Germany on April 19, 2025
    Verified Purchase
    Super geniales Produkt, promte Lieferung.
    Schade dass es dies für USB-C noch nicht gibt !!!!!!!!!
    Report
  • Azzi Stefano
    5.0 out of 5 stars Fa il suo dovere ma....
    Reviewed in Italy on September 26, 2024
    Verified Purchase
    La chiavetta fa il suo dovere e toglie l'alimentazione, l'ho acquistata per utilizzare la connessione dati del mio Pixel tramite cavo USB col PC ma senza alimentazione lo smartphone non rileva il cavo USB quindi l'ho restituita. Peccato.
    Report