When using 1.5 Gigabit or faster plans, the intention is to provide fast speeds to multiple devices in your home at the same time. These devices, combined, can use the full 1.5 Gigabit of available bandwidth. It is possible for one device, connected by Ethernet and using a capable adapter/dongle, to achieve full speed. To support these speeds, your router, device(s), and network configuration must all be able to keep up.