PortaPow 3rd Gen USB Data Blocker (Red 2 Pack) - Protect Against Juice Jacking

The three-star rating is not for the product itself, but instead for the product page. I verified both units received due indeed block data transfer. The product received does not resemble the product details pictured in the listing. Please see attached image to see them side by side.

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

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.

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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.