I am an Chinese seller,providing customers with high-quality and low-cost products. The types of products we sell include Home & Kitchen,Health & Beauty,Fashion Clothing,Electronics,Watches & Jewelry,and so on. We keep up with the most popular fashion trends. If you like our products, please follow us and become our followers and fans. Sincerely at your service .Please feel free to contact us if you have any questions.4 card slots to meet different memory card.High transmission speed, could reach 480 Mbps.USB powered (no external power or battery needed).Fully compliant with USB 2.0 specification, also support USB 1.1.High quality and durable alloy shell casing.Type: Card ReaderMaterial: AlloyColor: RandomOperating System Supports: Windows98/ME/2000/XP/Vista/Mac OS 9.0 or AboveFeatures: 4 Card Slots, Support Hot Plug, Easy to UseSize: 56mm x 30mm x 13mm/2.20" x 1.18" x 0.51" (Approx.)Notes:1. Compare the detail sizes with yours, please allow slight difference due to manual measurement.2. Due to the difference between different monitors, the pictures may not reflect the actual color of the item.Package Includes:1 x Card Reader (The memory card is not included.)