Card shape USB flash drive with one side printing, compact and portable, excellent advertising tool. Automatically connect the user to the specific website/links, the link is adjustable. OS Support: Win 2K/XP/Vista/7/8, MAC 10.5.0 or above. Support mutliple languages under Windows. Compatible to all types of keyboards. Can follow your request to print double side pictures. Silk printing, 3D Printing or others.