rgzhihuifz ruiguzjt153 USB-C to A & A to C Data Blocker 4-Pack Blue

What it is and who it's for

This four-pack of USB data blockers stops data pins while allowing power through, so phones and tablets charge safely at public ports. It suits travellers, commuters and anyone who regularly plugs into unknown USB sockets and wants to avoid juice-jacking attacks. The set includes both USB-A-to-C and USB-C-to-A adapters, covering the most common cable and port combinations in a single purchase.

USB interface limits

The adapters work with any USB-A or USB-C port that follows the standard pin-out, but they physically block the data lines so no enumeration, file transfer or debugging can occur. They do not negotiate higher voltages or currents beyond what the host port already provides, so charging speed stays at the port’s default rate. Devices that require a data handshake for fast-charge protocols will fall back to basic 5 V charging.

Capacity and headroom

Each unit weighs about 20 grams and fits in a pocket or wallet, making it easy to keep one at a desk and another in a bag. The aluminium-alloy shell resists everyday wear, and the four-pack quantity covers multiple devices or shared use among family members. Buyers who need simultaneous data and power, or who rely on proprietary fast-charge handshakes, will find these adapters unsuitable for those scenarios.