--- product_id: 359343622 title: "USB Power Blocker - Stops Charging, Allows Data (Single Pack)" brand: "portapow" price: "€ 13.07" currency: EUR in_stock: true reviews_count: 13 category: "Porta Pow" url: https://www.desertcart.at/products/359343622-usb-power-blocker-stops-charging-allows-data-single-pack store_origin: AT region: Austria --- # USB 2.0 data transfer up to 480 Mbps 5V power line disconnected USB-A male to female adapter USB Power Blocker - Stops Charging, Allows Data (Single Pack) **Brand:** portapow **Price:** € 13.07 **Availability:** ✅ In Stock ## Summary > ⚡ Power off, data on — keep your tech safe and connected! ## Quick Answers - **What is this?** USB Power Blocker - Stops Charging, Allows Data (Single Pack) by portapow - **How much does it cost?** € 13.07 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/359343622-usb-power-blocker-stops-charging-allows-data-single-pack) ## Best For - portapow enthusiasts ## Why This Product - Trusted portapow brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Reliable & Trusted:** Over 1,100 reviews with a 4.4-star rating prove its professional-grade performance - • **Protect Your Devices:** Prevents backfeed power damage for sensitive gear like Raspberry Pi & 3D printers - • **Plug & Play Simplicity:** Compact USB-A adapter, no cable mods needed—just connect and go - • **Versatile Compatibility:** Ideal for specialist setups—3D printers, digital audio interfaces, and more - • **Power Blocked, Data Uninterrupted:** Severs 5V power line while maintaining seamless USB 2.0 data flow ## Overview The PortaPow USB Power Blocker is a USB-A male to female adapter that disables the 5V power line while preserving USB 2.0 data transfer up to 480 Mbps. Designed for niche applications like Raspberry Pi and 3D printers, it prevents power-related damage and interference without sacrificing communication. Compact and easy to use, it’s a must-have for professionals seeking elegant, plug-and-play device protection. ## Description The PortaPow USB Power Blocker is a specialized USB-A male to female adapter designed to halt power transfer while maintaining data connectivity. Ideal for applications like 3D printers and Raspberry Pi where power can cause unwanted effects, this adapter disconnects the 5V line while keeping D+, D-, and GND connected for USB 2.0 data transfer. It's a single pack, red, rectangular item with a gold connector, and supports CE specifications. Measuring 4 inches in length, it's compact and convenient for indoor use. Supports data transfer rates up to 480 Mbps. Review: Work Perfectly - They work as intended, I'm using one with a Raspberry Pi (running Octopi) attached to an Ender 3 v2 printer to enable controlling the printer via Wi-Fi. Apparently you can damage your Raspberry Pi if you allow the Ender 3 v2 USB port to back feed power into it. This adapter severs the power lines while still allowing the two devices to communicate properly. It's far more elegant then modifying a USB cable. Devices wouldn't communicate at first but it was a bad cable not this adapter so make sure your USB cable is good. They're great value for the money, they can also be used to help eliminate USB power noise on some digital audio interfaces like the Scarlet series for example. Review: Great if you want to cut power and maintain serial connection - Perfect for what I needed it for! I have a Heltec LoRa board connected to a Raspberry Pi but the Pi is unable to deliver the Heltec's needed power supply. With this, I'm able to maintain the serial connection while putting the Heltec on battery power. This thing works very well! ## Features - This is NOT a data blocker, see PortaPow's other products if that is what you need - This is a USB-A male to female adaptor which has the D+, D- and 0V (GND) connected but the 5V disconnected, so power cannot pass through. - Useful for specialist applications such as 3D Printers and Raspberry Pi where providing power results in undesirable effects - 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. - Supports USB 2.0 Data Transfer. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B094FYL9QT | | Best Sellers Rank | #998 in USB Cables | | Brand | PortaPow | | Color | Red | | Compatible Devices | PC | | Connector Type | USB Type A | | Customer Reviews | 4.4 out of 5 stars 1,104 Reviews | | Global Trade Identification Number | 00027829469634 | | Manufacturer | PortaPow | | Mfr Part Number | PP_PBC1 | | Model Number | PP_PBC1 | | Number of Items | 1 | | Number of Ports | 2 | | Power Plug Type | No Plug | | UPC | 278294696340 027829469634 | | Unit Count | 1 Count | ## Product Details - **Brand:** PortaPow - **Color:** Red - **Compatible Devices:** PC - **Connector Type:** USB Type A - **Number of Ports:** 2 ## Images ![USB Power Blocker - Stops Charging, Allows Data (Single Pack) - Image 1](https://m.media-amazon.com/images/I/51YnuSrATxL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Is the data wires usb 3 or is there another product for usb3 that does this?** A: This device does NOT pass the USB 3.x data lines, only the D+/D- used for USB 1 and USB 2. I do not know of a device which passes USB 3.x data lines only. Doesn't mean that it doesn't exist, but I have never seen one - ever. **Q: Would this help on a usb keyboard(aluminum) when I walk around house electrostatic discharge when I touch it kb has to plugged in ?** A: No, this blocks power output from the USB port. As USB keyboards are powered by this voltage output, they keyboard wouldn't work unless it has an ac adapter, or used batteries to operate. The best use case I have found for these power blockers is to keep the voltage from away from the mainboard in a 3d printer so it is able to fully power off when the power supply is switched off. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Work Perfectly *by M***M on February 26, 2026* They work as intended, I'm using one with a Raspberry Pi (running Octopi) attached to an Ender 3 v2 printer to enable controlling the printer via Wi-Fi. Apparently you can damage your Raspberry Pi if you allow the Ender 3 v2 USB port to back feed power into it. This adapter severs the power lines while still allowing the two devices to communicate properly. It's far more elegant then modifying a USB cable. Devices wouldn't communicate at first but it was a bad cable not this adapter so make sure your USB cable is good. They're great value for the money, they can also be used to help eliminate USB power noise on some digital audio interfaces like the Scarlet series for example. ### ⭐⭐⭐⭐⭐ Great if you want to cut power and maintain serial connection *by C***M on July 15, 2026* Perfect for what I needed it for! I have a Heltec LoRa board connected to a Raspberry Pi but the Pi is unable to deliver the Heltec's needed power supply. With this, I'm able to maintain the serial connection while putting the Heltec on battery power. This thing works very well! ### ⭐⭐⭐⭐⭐ It's hard to find and works great, good price too. has a fun techy look... *by E***K on June 15, 2026* USB Power Blocker works exactly as described. Many people sell Data Blockers, it's hard to find a Power Blocker. this works great... solves the problem with a poorly designed USB Port causing voltage issues. ## Frequently Bought Together - PortaPow USB Power Blocker - Stops Charging, Allows Data (Single Pack) - ALINNA Black USB 3.0 Female to Dual USB Male Extra Power Data Y Extension Cable Splitter Adapter for 2.5" Mobile Hard Disk - Anker 323 USB-C Car Charger Adapter, 52.5W Cigarette Lighter Charger with 30W PowerIQ 3.0 Fast Charging Cable for iPhone 15/15 Pro Max, 14/13/12 Series, Galaxy S23/22, Pixel --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/359343622-usb-power-blocker-stops-charging-allows-data-single-pack](https://www.desertcart.at/products/359343622-usb-power-blocker-stops-charging-allows-data-single-pack) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-10-07*