The USB card slot supports TF cards within 256GB.USB2.0 fast transfer up to 480Mbps, high-speed file transfer.The secure transmission is stable and uninterrupted without delay.The all-in-one TF card reader instantly becomes a U disk, and you are not afraid of losing your TF card when you go out.Mini design, more convenient to carry when going out.Name: TF card readerTransmission speed: USB2.0Colour:silverMaterial:Zinc alloyPackage Contents:1 x Card ReaderOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.