4GB USB 2.0 Iron Man 2 Marvel Comic Flash Drive Japan Superhero Helmet Gold/Red Ultra portable USB Drive and lightweight design Compliant with USB 2.0/1.1 port Windows ME/2000/XP/Vista/CE3.0/Mac OS 9.0/Linux2.4.0 or higher (No software needed) Fast Transfer Rates(Read mode: 25 MB/s; Write mode: 8~12 MB/s)