Key Features: "Superior quality ABS construction endures scratch and wear, perfect in shape, ensuring strong durability and long-term use. 100% copper cable, resistant to rust, steady and safe operation., PIN plate gold 15UM, more stable and quicker transmission rate of reading memory card. Built-in integration design, in use of a set of screws, making it tightly and closely fixed to the case., Compact size, easy to carry, lightweight, user and environmental friendly., Dual High speed USB 3.0 offers data transfer speeds up to 5Gbps(theoretically), and they backward compatible with USB 2.0 1.1., It extends the USB 3.0 from mainboard to aidle floppy drive space, plug and play, supports hot plug. 5000 times plugging test and 100% electrical test to ensure the high performance."