What This Product Does TP-LINK 500 Mbps Gigabit Powerline Adapter TL-PA511 turns your existing powerline into a high speed network with no need for new wires or drilling. The twin pack design of TL-PA511KIT helps establish a powerline network initially. No configuration is required, simply plug your adapters into your power sockets & you can establish networking infrastructure in a flash. With a speed of up to 500 Mbps, TL-PA511 transmits multiple HD streams & even 3D movies to every room, making it a great choice for an easy to build multimedia entertainment network. Up to 500 Mbps, 300 Meters With advanced Home Plug AV technology, TL-PA511 provides users with stable, high-speed data transfer rates of up to 500 Mbps on a line length of up to 300 meters. Together with its built-in Qos & powerful AES encryption, the TL-PA511 is a great choice for a whole home solution to connect all network compatible devices--from computers & game consoles to set-top boxes for IPTV to printers & NAS hard drives.  Multiple HD Streams Up to 500 Mbps powerline speed & Gigabit Ethernet speed, ensures the smooth multiple HD streams transmission. Reduce Power Consumption Up to 85% The TL-PA511, a new-generation Powerline Adapter, with its practical design & sophisticated Power-Saving Mode consumes less power when compared with existing Powerline Adapters. When there is no data transmission or reception occurs over a certain period of time, it will automatically switch from its regular " Working" Mode to " Power-Saving" Mode that will reduce its energy consumption by up to 85%*. * Actual data will vary because of the network conditions & environmental factors. Pair Button for Easy Network Security Simply by pushing the Pair button on the adapters, users can set up a hassle-free Powerline network within minutes, complete with 128-bit AES encryption for network security & data protection. Its that simple! 1. Plug the adapter into the power outlet 2. Connect the device via the network cable to the adapter 3. Press the encryption buttons”and youre done! Support Qo S for Advanced Multiple-media Optimization Quality of Service (Qo S) function prioritizes the bandwidth requirements of data traffic. Users can choose which type of traffic they will use -- Internet, Online Game, & Audio or Video, Voice over IP, & the Qo S functions will guarantee clear, instant reproduction of that application, even when other applications are running on the network at the same time. Please note: networking components such as Powerline adapters require that all adapters must work within the same Home Plug standard to remain compatible, for example Home Plug AV (HPAV) adapters with communicate with other HPAV Powerline components, regardless of whether they are 200 Mbps or 500 Mbps. Older 85 Mbps adapters work on the different Home Plug 1.0 standard & are not compatible with Home Plug AV adapters. All Powerline products will connect to any switch or router Ethernet port. Powerline adapters can be used with extension leads (except surge protection ones), & will work across different ring mains so long as they share a common fuse box.