Add Gigabit Ethernet connectivity & 3 USB (Universal Serial Bus) 3.0 Hub ports to a computer through a single Super Speed USB (Universal Serial Bus) 3.0 port. The ST3300U3S USB (Universal Serial Bus) 3.0 Gigabit Network Adapter turns a single Super Speed USB (Universal Serial Bus) 3.0 host connection port into an RJ45 Gigabit network port as well as three additional USB (Universal Serial Bus) 3.0 hub ports. Unlike a USB (Universal Serial Bus) 2.0-based adapter, this USB (Universal Serial Bus) 3.0-based NIC lets you connect to your home or office network at full Gigabit bandwidth, with support for 10/100/1000 Mbps. Plus, with support for features such as Jumbo Frames, VLAN tagging & Wake on LAN (Wo L), this versatile network adapter offers a comprehensive Gigabit network solution. On top of Gigabit Ethernet connectivity, the adapter also adds three USB (Universal Serial Bus) 3.0 hub ports to your system, which allow you to connect external storage or other USB (Universal Serial Bus) peripherals locally to the host computer. The hub ports support USB (Universal Serial Bus) 3.0 speeds of up to 5 Gbps, as well as fast charging for mobile devices (e.g. iPhone, iPad & most Android devices). Backward compatible with USB (Universal Serial Bus) 2.0 & USB (Universal Serial Bus) 1.x standards, the Gigabit Adapter/USB 3.0 hub will still support older USB (Universal Serial Bus) devices & can also be used with an older system that does not have USB (Universal Serial Bus) 3.0 ports (network speed limited by USB (Universal Serial Bus) 1.x/2.0 bus), allowing you to mix & match USB (Universal Serial Bus) 3.0/2.0/1.x devices. For further portability, the adapters can be used with or without the included external power adapter, eliminating the hassle of having to find an available wall outlet.