The expansion dock supports hot swap, which is easy and convenient to use.The expansion dock adopts USB3.0 standard interface, allowing for high-speed and stable transmission.Made of aluminum alloy, the expansion dock is stainless and hard to use.The length of the expansion dock is 8cm, width is 1.6cm and thickness is 0.7cm.The expansion dock is compatible for Windows10.8.7, for Vista, for XP, for Mac OS 10.4.6. It supports all types of computers with Type-C/USB standard interface. It also supports all types of phones with Type-C standard interface with OTG function.Item Name: Expansion DockMaterial: Aluminum AlloyStyle: USB, Type-C(Optional)Cable Length: 11cmInterface: 1 x USB3.0, 2 x USB2.0, 1 x Type-C2.0Transmission Rate: 5Gbps(USB3.0)Compatible System: for Windows10.8.7, for Vista, for XP, for Mac OS 10.4.6Features: Multifunctional, Fast Transmission, LightweightSize Details: Expansion Dock: 8cm x 1.6cm x 0.7cm/3.15" x 0.63" x 0.28" (Approx.)Cable Length: 11cm/4.33" (Approx.)Notes:Due to the light and the screen setting difference, the item's color may slightly differs from the pictures.Please allow slight dimension difference due to the manual measurement.Package Includes:1 x Expansion Dock