■ Over Light System The Conventional mo and up to 2 times the data transfer speed. Special protective coating to firmly guard from Chile and dust, high temperature environment in a high strength, low friction lightweight shutter adopts aluminum magnesium alloy. ■ Model Number: RO – M640. Win. B5P ■ Memory Capacity: TEW-640MB ■ ■ Windows format (0 NT4.0/2000//ME/XP) 1 Package with 5 pieces * This disc are ready to wear on a 3.5 compression to the TEW-640MB over light mo disc drive.