Capacity from 256MB to 8GB The rate of performance depends on the different operation system available and various flash adopted Multiple Operation Systems supported: No driver needed in Windows ME, Windows 2000, Windows XP, Mac 9.x or later, Linux Kernel 2.4 or later. Only Windows 98 and Windows 98SE need the enclosed driver Hot swappable, USB Plug & Play compatible USB Version 1.1/2.0 interface 10 years data retention 1-year warrantyFashionable design Trudy Manager of Sales Department GoodKing(HK) Technology Co.,Ltd Add: 2921 B Xinghe century CBD Caitian south Road Futian area , shenzhen city,guangdong, china Asia Tel: 0086-0755-83683177 Fax: 0086-0755-83647503 Email: usbking.com081@vip.163.com MSN:usbking_081@hotmail.com Blog: http://usbkibg081.blogspot.com/ Products Catalog: http://www.usbking.com