100% brand new and high quality   LED indicator for power status. Multiple USB 3.1 interface support plug and play. hot swap, easy to use and carry. Support over current and under current protection. Support USB 3.1/3.0 super speed (5Gbps) transmission, downward compatible USB2.0 Driver free, support windows XP, windows 7, 8 and Mac OS, Linux. Independent supply provides power supply to connect devices. The devices connected to the 4-Port USB 3.0 Hub must not exceed a combined current of 5 volts 900 mAh. The power supply is not included. USB 3.0 interface. High speed data transfer up tp 5 Gbps. Fast transfer rate for reliable copy/download/backup. Fast transfer rate for reliable copy/download/backup. Card Compatibility: MS,M2,SD,TF Color:sliver Size:7.7cmX5cmX2.5cm / 3X2X1 inch Quantity: 1 Pc (Reader & Cable ONLY, other things not contained)   Note: Due to the difference between different monitors, the picture may not reflect  the actual color of the item. Thank you! Please allow the measurement error of 0.5-2cm. No retail packaging.