The Optical Disc Archive Stand-Alone Drive from Sony is a stand-alone drive with a USB 3.0 interface designed to provide an extended life cycle for storing and archiving all forms of audio-visual assets and data files. It is backward-read compatible which provides read capability for all generations of optical disc cartridge media for over 50 years. The drive unit can support a single optical disc cartridge with a capacity of up to 3.3TB in re-writable and write-once formats (sold separately). This drive provides a read rate of up to 2 Gb/s and a write rate of up to 1 Gb/s with verify on using the ODC-3300R Generation 2 cartridge.