Specifikationer:Instantly add 3 x USB 3.0 SuperSpeed ports and 1 x RJ45 gigabit ethernet port to your Ultrabooks, notebooks and tablets, perfect ideal for travel and use as external extension solution3-port USB 3.0 SuperSpeed ports provide high data transfer speed up to 5Gbp/s, backwards compatible with USB 2.0/1.1 devices. And Gigabit Ethernet port gives access to super fast 1000Mbps network speedsBuilt-in Overvoltage/Overcurrent/Leakage and Short-Circuit protection keeps your devices and data safe. Supports IPv4/IPv6 protocols, dual channel transfer mode, automatic transfer and data stream reversing regulationWork and fun is fully integrated for your MacBook Air, MacBook Pro, iMac, Google ChromeBook, Microsoft Surface Pro, Lenovo Yoga, ThinkPad, Samsung, Dell ect with USB port interfaceWhat We offer: 2-year warranty quality guarantee, 24h friendly customer service and email support.