Add Ethernet, audio & four additional USB (Universal Serial Bus) 2.0 ports to a laptop or netbook through a single USB (Universal Serial Bus) connection. * Add multiple additional capabilities to a laptop/netbook with a single, convenient USB (Universal Serial Bus) connection * A small, light-weight design & no external power adapter required, making for an excellent portable accessory * Backed by a Star Tech.com 1-year warranty & free lifetime technical support The USBDOCK2 USB (Universal Serial Bus) 2.0 Laptop Docking Station / Port Replicator with Audio & Ethernet can be used to expand the I/O capabilities of a laptop or netbook through a single USB (Universal Serial Bus) connection. The USBDOCK2 offers several commonly used interface ports, such as 10/100 Mbps RJ45 Ethernet, 3.5mm mini-jack audio connectors for headphones & microphones, & 4 additional USB (Universal Serial Bus) 2.0 ports. The USBDOCK2 makes it easy to plug & unplug your devices when moving your laptop around. Simply plug in 1 cable to connect to multiple peripherals at your desk or work station. The docking station is also small enough to carry around in your bag, to give you expanded capabilities while on the road.