USB repeater cables are extension cables for a USB port, which can be combined with a hub, i.e. a distributor. These are especially useful if the appropriate connectors are difficult to access on the computer or are repeatedly connected different devices. As their name implies, repeaters strengthen electrical or optical signals and thereby contribute to an increase in the reach. Using a wireless repeater, radio signals can be transported, e.g., from the living room to the basement or roof studio.