HP 92279F Magneto-Optical Disk Rewritable 2.3 GB 512 byte/sector Pack of 5 USEDProduct Description: This item is a 5 Pack of Used HP 92279F 2. 3gb Rewritable Optical Media. Used disks have been formatted and cleaned. Rewritable Magneto Optical Disks are designed for use with large scale, high security, or permanent storage applications and Hewlett Packard Jukeboxes. HP 92279F offers a 2. 3GB capacity with a 512 bytes sector (2X) write speed. Provides easy data access and permanent data storage that can't be altered or erased.