Specification: Features 1.USB 2.0 compliant. 2.Small,external design makes it extremely potable. 3.Auto-detects card type when ed. 4.Windows and Macintos mpatible. 5.Slotto slot read/write opration. Specifications Dimension of packing(carton):520*410*320mm(L*W*H) 100/carton Dimension of package :173*120*48mm(L*W*L) Measurement of the Item: 90*52*14mm (L*W*H) Gross Weight: Net Weight: