USB Micro SD SDHC Card Reader flash drive for 8gb/16gb/32gb/64gb/128gb/256g 1. Read / Write Supported: MicroSD TF M2 Operating System: Windows Me/2000/XP/Viata/7 or MAC OS8.6,9.x(without driver) Interface: USB2.0/card slot Dimensions: 3.1 x 1.6 x 0.6cm/1.22 x 0.63 x 0.24inch(L x W x H) Lanyard length: 5cm/1.97inch Ship from United States. Delivery within 7-9 days