Functions 1.USB(Universal Serial Bus)v2.0 specification 2.Compatibal with WIN98/SE/ME/2000/XP/7 and MAC OS 9.X,X.1.2 or highter 3.Read and write any files for PC/MAC 4.Fast Data/Files Access and Transfer Rate up to480Mb/Sec 5.Truly Plug&play and Hot Swapping capability 6.Read and write many kinds of cards repeatedly:such as MS XD SD MMC CF card 7.CE and FCC compliance, ideal for gifts or as promotional items. Product size:63x65x19MM Material:ABS Packing information Carton size 45X35X38CM Qity in Carton 100PCS N.W 8KGS G.W 9KGS Blister packing Patent no:200830105557.7