... used with the mini speaker;3, Capacity: 512mb, 1gb,2gb,4gb, 8gb, 16gb, 32gb, 64gb;4, Data transfer speed: Read:12mb ... ;7, Service: logo printing, file preloading, auto-run, space partition, password protect, boot function (option)8, Shipment: for light goods, we ... or as required. USB Flash Drives/stick for 1gb 2gb 4gb 8gb 16gb