

🛡️ Charge smart, stay secure, and never compromise your data.
The PortaPow USB-A to USB-C Data Blocker is a compact, third-generation adapter that converts USB-A ports to USB-C charging sockets while physically blocking data transfer. This ensures safe charging by preventing hacking or virus risks in public spaces. Compatible with all 5V USB-C devices, it excludes fast-charging protocols requiring data sync. Packaged in a reusable bag, it combines security, convenience, and eco-conscious design for professionals on the move.








| ASIN | B08BS62WMR |
| Best Sellers Rank | 14,617 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 1,765 in USB Cables |
| Guaranteed software updates until | unknown |
| Item model number | USB-C to A Data Blocker |
| Manufacturer | PortaPow |
M**Y
Works as described.
Simple piece of kit that does the intended job. I’ve had a couple of these for different connectors.
R**D
Works as described
As described, not sure what more you can ask for
R**L
Really useful to prevent data theft
This usb stick, only passes the cables needed for charging in public places and not data cables so no one can stake your data from public usb points (cafes, trains, hotels etc.)
C**O
Works, but not with Samsung
I've tested and it works with almost all my devices. The exception is my Samsung phone, which doesn't charge or charges really slowly 95% of the times. To understand if it was this adapter's fault, I've used other adapters I had and it also failed, so it seems that Samsung devices have some issue with USB-C to USB-C or USB-A to USB-C adapters *on the side that connects to the charger*, even if they pass data. What seems to work in my case: have a USB-C to USB-C data blocker on the side that connects to the phone. I'm not sure if it's fair to remove a star for this as it may be a Samsung problem. On the other hand, Samsung is a popular brand and some people buying this will have issues.
G**N
Good idea
Seen this in advert and thought this is a good idea for going on holidays have not used it yet but still a good buy
K**D
Seems to do a good job
Seems to do what it’s meant to do, with ease.
D**B
Avoid Juice Jacking
Simple little data blocker. Throw a couple in your IT kit bag and you will never fear using public USB sockets again.
K**M
Protect your phone when charging from unknown usb slot
Essential for travel, especially when hotels putting more sockets next to beds
P**T
Nothing more to say
M**S
Este produto permite o carregamento mas este não é continuo, está sempre a parar e a continuar.
P**J
Moim zdaniem niezbędne akcesorium w podróży, ale również w pracy czy w domu. PortaPow jest przydatny wszędzie tam, gdzie chcemy skorzystać z zasilania portu USB, ale nie chcemy wymiany danych miedzy naszym urządzeniem a nieznaną ładowarką lub obcym komputerem. Zarówno przygodne ładowarki, jak i komputery mogą być niebezpieczne ze względu na możliwość próby ataku podłączonego telefonu złośliwym oprogramowaniem. Ma to znaczenie także wszędzie tam, gdzie korzystamy z komputera np. u znajomego czy w pracy, ale nie chcemy, by rozpoczynał on synchronizację z naszym telefonem, której możemy nie być w stanie w porę anulować. Chcemy po prostu jedynie skorzystać z zasilania USB w celu doładowania. Sama koncepcja tego typu zabezpieczenia nie jest nowa, bo od dawna słyszałem o zabezpieczeniach zwanych USB condom. Jednak PortaPow jest porządnie wykonany, co budzi zaufanie i zajmuje niewiele miejsca.
B**R
“Juice Jacking” is not new. It was first identified as a potential vulnerability back in 2011. It has been making the rounds in the news since. The attack is diabolically simple. It takes advantage of the USB standard at the hardware level. See photos for reference. When you plug your device into an infected USB port (or cord) at an airplane, airport, coffeeshop, or Uber, you’re putting your digital security at risk of being infected with malware that will hijack your device or, worse, lay dormant to collect and transmit your sensitive information without showing any external symptoms. To guard against juice jacking, you could follow a few simple but effective precautions: 1️⃣ Do not plug into a public USB port. 2️⃣ Do not use a USB cord from a stranger. 3️⃣ Use a portable power bank, or a wall charger (acts as buffer), and your own cord. 4️⃣ Use a USB data blocker: Simple and effective devices that work at the physical level by removing the two leads used to transfer data in and out, which leaves only the power and ground leads. 🤓 How To Test 1️⃣ Visual Inspection: This is something you can actually verify with your own eyes. A data blocker has two leads, a standard USB has four. See photos for a side by side. 2️⃣ Function Test: Another simple way to check if the blocker you received is effective is to plug it into your computer then plug a thumb drive into the blocker. If the data blocker is doing its job, your computer won’t be able to recognize or read the thumb drive because it lacks data leads. 👉 I have tested this PortaPow Data Blocker for charging and data blocking, and in my testing, it worked exactly as advertised. Final Thoughts 🧐 If you travel a lot, especially internationally, you will inevitably be in a situation where you have to use a USB port to recharge your phone. This happens often when you’re seated in an airplane and there’s only a USB port and no other sockets within easy reach. For those and similar scenarios, this little doohickey will be there to keep you safe. Just buy them, and toss them into your accessory bag for your next trip. It’s better to have them and not use them than the other way around. This a simple device, made well, and priced reasonably. I highly recommend it. Another alternative is data blockers made by Eyebloc, but those seem to be always sold out. I hope my review has helped you make a more informed buying decision 👍😊✌️ — — — — — — — — — — — — — — — — ⚠️ One more thing Here are a few important caveats PortaPow includes with its product. - “Our SmartCharge chip detects whether your device uses the Apple, Universal or Samsung spec and sends the correct signal, ensuring the adaptor does not become a bottleneck.” - “This adaptor will not solve charging issues caused by a low quality / extra long cable (how long is extra long🤔)” - “Devices which charge using Qualcomm Quick Charge, Samsung Adaptive Fast Charge, or similar standards require data transfer to be enabled and a compatible charger, and so will not charge at extra fast speeds from normal USB sockets or with a data blocker.”
R**.
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