USB Flash Cables (with lighted ends) integrate built-in LED FLASH on both ends to indicate that Data is transmitting and that they are properly linked.
The FLASH cable series is also convenient to use with other peripheral devices, connections and different colors allow for color-coding your devices. These sets of cable are a great addition to your collection of USB devices. Fully Activity Flash Cable is especially helpful to keep various devices identified in order to unplug from a hub, without having to follow a cable around your desk/room.
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