USB C to C Data Blocker, Anti Juice Jacking, for Charge Only, Case Friendly Design, Support up to 240W PD Charging (2-Pack), Red

They fit a USB-C port very well. The function is rather basic - - there are only two pins connected, the + and - current pins, so current can flow through but no data. They also are handy when you want to charge something from your PC or laptop, but don't want it to connect to Windows.

Samsung S21 series phones only charge at 25 watts maximum despite using higher wattage chargers.With my phone set on standard charge rate (15 watts) and set to 80% max charge to retain battery longevity per Samsung recommendation, I used Samsung's standard charger with its USB-A to USB-C cable.I plugged the USB-C cable end into the data-blocker device and inserted it into my phone jack. My phone then displayed a message to check my charge cable (or something like that), then showed my current 53% battery level and a time of "2 hrs,13 min" to reach 80%. I waited a minute to see if the estimated time would actually change, which did. Extremely slow charge rate just as the listing description stated it would if not using a USB C-to-C cable.To test for a faster charge rate, I swapped my charge components for those with only USB-C connections and reinstalled the data-blocker device into my phone jack. Sure enough, phone now displays "30 min" to reach 80% (starting at 53%).[Update, 3/17/25]Tried using the USB-C ports in a rental car, using the same Samsung phone and charging cable as mentioned previously, with a 47% battery status. The displayed charging time showed "2 hrs, 34 min", yet displaying only "38 min" when plugging into a Samsung USB-C, 25 watt power adapter just minutes later in my home. I even experimented with flipping and rotating the cable / connector insertions, including the data-blocker, and experienced no changes in displayed charge times.Bottom line: The data-blocker device CAN facilitate quick charging as claimed, as long as all USB-C components are up to task.Disclaimer: I did not try plugging directly into the rental car's USB-C connector without the data-blocker device for obvious reasons, so I don't know what charging times would be displayed for comparison purposes vs my power adapter.

Fit perfectly, good job blocking data transfer and work well charging my devices, good choice especially for charging stations such as found in airports or public areas. Small and handy

Tested with my pc and several chargers, can confirm that the fast chargers will still fast charge through these and data transfer does not even come up as an option when connected to a pc, though it will also complain about checking the cable and normal charge when connected to a pc this way.They are TINY: this is great for portability, but I can see how someone with large hands might have issues. Also might be prone to losing them when travelling if not careful due to that tiny size... good thing it's a 2-pack I guess, and the nice zip lock bag they come in can be useful for this too.Overall seems like a nice to have for peace of mind when travelling, though a bit overhyped as someone randomly targeting people with this type of hack is probably not that likely.

A VERY useful item to keep with you.

When traveling, don't leave home without this. Use this when charging your phone in any public space. This blocks your data from being stolen when you plug your phone into a charging cable. Charging stations are everywhere. This just keeps you a bit safer.

Does what it says, nothing special

Super handy and great to have on hand. Works as promised. I need more. Good value.