Product Description
It sounds like you're referring to a VOLT IT USB 3.0 to RJ45 adapter, which is a device that converts a USB 3.1 connection into an Ethernet (RJ45) port. This type of adapter is typically used to allow devices that only have USB ports (such as some laptops, desktops, or tablets) to connect to an Ethernet network via a wired connection. These adapters are useful in scenarios where Wi-Fi is unreliable, unavailable, or when you need a more stable and faster internet connection than Wi-Fi can provide.