... (depends on computer) Capacity:256MB/512MB/1GB/4GB/8GB/16GB/32GB USB FLASH DISK Read speed:9.5MB/S(depends on computer ... :32MB,64MB, 128MB, 256MB, 512MB, 1GB. 2GB. 4GB. 8GB. 16GB. 32GB.USB FLASH DISK Support system: windows98/ME/2000/XP,MAC OS9 ... 2.4.x and driveless(expect windows98) USB FLASH DISK Working temperature:-40-+70 USB FLASH DISK Stay temperature:-50-+80 16GB ...