D3 USB Cable Tester Case

Sick of wondering whether your USB cable supports data transfer or just charging? The D3 USB Cable Tester eliminates the guesswork by instantly identifying your cable type. To use it, simply power the module via the USB-C port marked “IN.” Then, connect one end of your cable to either the top-left USB-C port or the center USB-B port. Plug the other end into one of the bottom slots—and voilà—the tester reveals your cable’s capabilities in seconds. The module is affordable, but its exposed design isn’t exactly eye-catching. That’s where this custom case steps in. Sleek, snap-fit, and glue-free, it adds a polished look without sacrificing convenience. For quick cable recognition later, I color-code mine with nail polish. It’s a simple trick that saves time and keeps my setup organized.