PortaPow USB Data Blocker - Protect Against Juice Jacking (Red, 1)

Pros: I like the price and fact that the red makes these stand out. With my Garmin there has always been a problem when connecting to a car that the car rather than just giving power to the device would try to connect. This eliminates that problem. Now with rental cars I've switched to Google Navigation and I like that this isolates power only to your usb device, and that way my phone is safe from a USB Virus attack from a rental car. The peace of mind of being able to plug into any USB JACK and just get power only is priceless. CONS: These are easy to loose either to theft or just putting in a drawer and forgetting which one. Yes I'd buy these again, and just did as didn't want to spend time looking, Also I'd recommend them to friends. bdv

I wish I knew about these devices sooner. I always set my cell phone to power only or would use a wireless charger where I would go but having this is another nice alternative to give you a USB charging connection without worrying on data being transmitted to your phone or have the phone transmit data to a receiving device. The data blocker works fantastic with samsung quick charging and is great to help assure you are not transmitting data by having the missing data pins on the port so you know it's impossible for it to transmit. The only recommendation I would give to the manufacturer for this would be to possibly have a tiny loop on the side where you can put a keyring on it to help keep it safe so you don't lose it easily but I wouldn't have a problem with it since it's bright red to grab your attention. Just something for thought that's all.

This works for allowing USB dumb power to be delivered without allowing data to go over the cord. I won't leave home without it.

Nice to see a product that does exactly what it is supposed to do. I ordered this primarily so that I could get a faster charge rate from USB ports on my computer or in my car. Yes, I do have actual QC Fast Charge chargers, but it is nice to have an alternative. Secondarily, I like the notion of being able to block data transfer. This is very handy during travel or whenever you might be plugging into unknown USB ports. I was able to confirm that this blocks data since when I plugged my phone into the USB port on my laptop, using this adapter, my laptop did not detect it being plugged in, but the phone did start to charge. As for the charging speed, I had this plugged into one of the USB ports on my laptop and then had it hooked up to my Galaxy S8+. Using a battery monitoring program, you can see from the attached screen grab that I was getting a net charge rate of 900mAh. This was with the screen on, so with the screen off it would have been faster and certainly faster than the 500mAh that you would normally see from a USB port. Edit: Going to drop this down to 4 stars. I had this hooked up to the USB port in my car and the output could not maintain the charge, let alone add charge, to the battery while I was using my phone for navigation. Had to switch over to the fast charge adapter instead.

Great for devices that will freak out or change modes when they detect *any* data communication -- the red one has a charge protocol detection chip which is useful when securely charging high-draw modern devices, but useless for diagnostic purposes or legacy devices. This adapter is a fantastic way to use standard mini USB leads with devices running the older GarminOS based on an unknown embedded OS (used as recently as the DriveSmart 50, many still run current maps with a microSD setup). These devices give no choice to simply charge if a data connection is detected and block out the UI in PC Connection mode. Newer Linux-based ones (like DriveSmart 65) now have a prompt and will work as expected with the red adapter in a secure charging scenario, or bare lead for normal use. Since USB-A luckily tops out at 2.4A under most cases, even the red one will charge modern devices at a sane rate, but for devices with low standby draw that can trickle charge at 500mA this is useful to defeat fast charging protocols for debugging or increased battery life. The red one should still be safe even if your device uses Qualcomm BatteryKiller 3.0 because of it visibly having no upstream data pins to the charger required to enable fast-charge combinations that are unacceptable for everyday use. In this context this (clear) one is good if you're paranoid, or it's a rare device where the [email protected] provided by the USB BC 1.2 standard is too much .

Peace of mind in hotels and other people's cars. Priceless.

Worked exactly as described. Perfect for charging my phone without the possibility of its data being accessed. I use it in the airport often.

Not sure if it's really protection works

Authentique bloqueur de données. La transparence permet de voir aussi que seuls sont présents les fils d'alimentation , donc aucun vol de données. Je recommande vivement.

They work and I know the Princess can plug in anywhere and charge without there being an issue.

Look no further! This PortaPow USB data blocker has no connection for data and will only connect the power lines ensuring that your phone or tabled is charged and not accessible through the data lines. A must have for the security aware traveller. Be it due to personal security concerns or business driven concerns, this is the gadget you need to have.

These are great for stopping a data connection with the computer you're connecting to, they're particularly handy with my iPhone 6s and Macbook pro because I have tethering set up, so if I plug the iPhone in without these my tethering connection is used. I've also used them in the office to connect to colleagues computers when I just wanted to charge my phone. I thought they would improve the charge speed of the iPhone when connected to a Macbook but they don't as it seems that Macbooks already supply the full power to charge a phone even when a data connection is active. I found this out by using another very handy product from PortaPow which is the PortaPow Dual USB V3 Power Monitor with SmartCharge - this lets you see how much power a USB device is consuming and as you can see from the attached photos, with a data connection established the power draw is the same as when using the data blocker (note that the power draw goes up and down slightly, hence the difference). But regardless, these are very handy and do the job well. They're also very sturdy. One note - I tried using this in my Audi S4 and it didn't like it, it kept constantly reconnecting and got very confused, so it seems it won't work in all places.

Ça marche parfaitement, cela évite les piratages des données dans des lieux publique, j'ai même acheté un autre paire pour faire cadeaux !