This TDK VeloCD Internal CD Burner Rewrite Drive is a great addition to any PC setup. With a write speed of 48x, it allows for quick and efficient duplication of CDs. The AI-481648B model is compatible with IDE interface and is part of the TDK re-writable product line. This drive is perfect for internal use, whether it's for a small office or a personal computer. It comes in a sleek clear blue color and is a great choice for those in need of a reliable CD burner. The unit quantity is one and it is a type of internal desktop drive.