ModelBrand: BYTECC Model: U3H-700 SpecType: USB Standards: USB 3.0 Ports: 3 x USB 3.0 & 4 x USB 2.0 Transfer Rate: 1.5/12/480Mbps,5Gbps Operating System Supported: Windows XP, Vista & 7, Windows Server 2003 & 2008 FeaturesFeatures: Compliant with USB 3.0 & 2.0 Spec Advance design keeps optimal speeds when using multiple USB devices simultaneously Self-power Plug & play Manufacturer WarrantyParts: 1 year limited Labor: 1 year limited