Welcome to Litzee Store! 1. Support Windows 98SE/ME/2000/XP/WIN7/VISTA operating system, support MAC OS8.6 or higher^ 2. Power saving design, strong error correction, shockproof, low noise;^ 3. Suitable for laptops, mobile PCs and compatible PCs^ 4. Power supply mode: USB bus power supply, using chip, no need for external power supply ^ 5. DOS boot: using a chip, can be used to boot the installation system, support USB boot before booting In the title and description we have provided details of the product including its features and specifications, please note the size and dimensions of the product to ensure it meets your needs. Warm reminder: Due to lighting effects, monitor brightness, manual measurement, etc., there may be some slight differences in color and size between photos and actual items. Sincerely hope you can understand. During the shopping process, if you have any questions, please feel free to consult us, we will reply to you within 24 hours, I wish you a happy shopping!