Specifications:Item Weight: 28g / 0.99ozPackage Weight: 31g / 1.09ozPackage Size: 19.7 * 15 * 1.7cm / 7.76 * 5.91 * 0.67in L * W * H) Features:The dual expanded USB 2.0 are very suitable for mini USB connection.Suitable for MINI PCIE mainboard or laptops.Mini PCI-E 52PIN interface is USB defined.Please Note:Please make sure that your mainboard interface is Mini PCIe slot and whether it is USB defined.It only suitable with Mini PCIe interface.