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2. Juice jacking - Wikipedia

   en.wikipedia.org/wiki/Juice_jacking

   Juice jacking is not possible if a device is charged via a trusted AC adapter or battery backup device, or if using a USB cable with only power wires. For USB cables with data wires, a USB data blocker (sometimes called a USB condom) [25] can be connected between device and charging port to disallow a data connection. [26]

3. Ferrite bead - Wikipedia

   en.wikipedia.org/wiki/Ferrite_bead

   Ferrite bead. A ferrite bead at the end of a Mini USB cable. A ferrite bead – also called a ferrite block, ferrite core, ferrite ring, EMI filter, or ferrite choke[1][2] – is a type of choke that suppresses high-frequency electronic noise in electronic circuits. Ferrite beads employ high-frequency current dissipation in a ferrite ceramic to ...

4. USB communications - Wikipedia

   en.wikipedia.org/wiki/USB_communications

   USB signals are transmitted using differential signaling on a twisted-pair data cable with 90 Ω ± 15% characteristic impedance. [6] Low speed (LS) and Full speed (FS) modes use a single data pair, labelled D+ and D−, in half-duplex. Transmitted signal levels are 0.0–0.3 V for logical low, and 2.8–3.6 V for logical high level.

5. Keep the data on your phone safe with this USB data blocker

   www.aol.com/finance/keep-data-phone-safe-usb...

   The Privise USB Data blocker prevents your data from being jeopardized by adding a layer of security between your phone and the source of charge. Our team is dedicated to finding and telling you ...

6. USB - Wikipedia

   en.wikipedia.org/wiki/USB

   USB bridge cables, or data transfer cables can be found within the market, offering direct PC to PC connections. A bridge cable is a special cable with a chip and active electronics in the middle of the cable. The chip in the middle of the cable acts as a peripheral to both computers and allows for peer-to-peer communication between the computers.

7. USB hardware - Wikipedia

   en.wikipedia.org/wiki/USB_hardware

   The 24-pin double-sided connector provides four power–ground pairs, two differential pairs for USB 2.0 data (though only one pair is implemented in a USB-C cable), four pairs for SuperSpeed data bus (only two pairs are used in USB 3.1 mode), two "sideband use" pins, V CONN +5 V power for active cables, and a configuration pin for cable ...