1) Capacity:4G 2) USB interface: USB 1.1/2.0 3) Fast data transfer rate. 4) USB 1.1 1.1MB/s for read, 1.0MB/s for write 5) USB 2.0 11MB/s for read. 10MB/s for write 6) LED light: LED indicates power. read/ write. 7) Windows. Mac and Linux copatible, without additional drive(except Win98/98SE) 8)Size:8x2x2cm