Speed Class Rating: Reading: 10~15MB/Sec Writing: 3~8MB/Sec Ready Boost: Yes USB Specification: USB 2.0 Dimensions: 28.6 x 13.2mm Weight: 3g Features: Support USB2.0 high-speed transfer interface Capless design Hot Plug-and-Play Supports driver-free operations on Windows ME/2000/XP/Vista, Linux 2.4 and MAC OS Parts: Lifetime limited Labor: Lifetime limited