The ASUS ZenDrive U7M is an external DVD burner that comes in a slim design with a distinctive Zen-style body. One of the features of this model is its support for durable M-Disc optical media. Unlike many other optical drives, the ASUS ZenDrive U7M is compatible with M-Disc media, which has a lifespan of over a thousand years. M-Disc technology is an ideal means of archiving particularly valuable data. The ASUS ZenDrive U7M comes in a chassis that is only 13mm thick, making it an ideal accessory for thin and light notebooks.