The PEXUSB4DP is a low profile 4 port USB card designed for versatility and performance Providing simple system expansion for added peripheral connections this PCI Express USB card adds 3 external USB 20 slots and 1 internal USB 20 slot with support for high speed USB 20 data transfer rates of up to 480 Mbps and includes WHQL certified drivers and easy plug and play installationFeatures Backward compatible with USB version 11  Compatible with PCI Express x1 x2 x4 x8 and x16 Slots  Compatible with Windows 2000XP2003Vista7 and Linux  Compliant with PCI Express 11 specs  Drivers are WHQL certified  Easy plug and play installation  Fully compatible with USB OHCI specifications  Maximum transfer rate of 480Mbps  Package includes drivers installation guide and a full profile bracket  Provides up to 500mA of power per USB port  USB 20 compliantBarcode 0065030836661Bus Type PCI ExpressDepth 90 cmDescription Capable of adapting to virtually any PC case form factor the low profile USB card includes a standard profile bracket for installation in full form factor casesExternal Connectors 3 x USB 20Form Factor PCI Express CardHeight 20 cmInternal Connectors 1 x USB 20Product Type USB CardWarranty 2 YearsWeight 004 kgWidth 80 cm