Express Card to USB 3.0 4-Port Hub + Card Reader Combo is a patented external USB 3.0 Host + USB 2.0 multi card reader designed for laptop only, main body of which is made of aluminum alloy to give customers high fashion. This product transmits data and upgrade laptop directly through Express Card Slot of laptop (need one Express Slot in your laptop). Built-in express card allows you quickly add a 4-Port USB 3.0 Hub to your laptop, without buying extra Express Card to upgrade your laptop from USB 2.0 to USB 3.0. Support USB 3.0 drive, high-resolution camera, video surveillance camera, digital video camera and multi-channel audio, etc. It provides USB 3.0 with super speed up to 5Gb/s. Also compatible with USB 2.0 and 1.1. Express Card to USB 3.0 4-Port Hub + Card Reader Combo can be used with wide range of USB devices, allowing multi USB 3.0 devices and traditional USB devices to operate simultaneously. 4 slots all-in-one card reader can meet your daily demand of writing and reading all kinds of digital memory card. The built-in current protection system can effectively protect the device and host itself in the case of sudden electricity, to provide enhanced durability and reliability.