A direct-attach cable data transmission visual indicator system includes a networking device having a port, and a direct-attach cable that includes a direct-attach cable connector that is located on an end of the direct-attach cable and that couples the direct-attach cable to the port, and a visual indicator device that is included on the direct-attach cable adjacent to and spaced apart from the direct-attach cable connector. The visual indicator device receives, from the networking device via the port and the direct-attach cable connector, data transmission information that is associated with the transmission of data via the port, and provides a visual indication that is based on the first data transmission information.