These drives support both 512 and 1024 byte sectors. The 650 Megabyte cartridges can be swapped among drives from each manufacturer. Maxoptix's Tahiti II drives can format a 650 Megabyte cartridge for a total of 1.3 Gigabytes using its optional, proprietary, ZCAV format. PPM data-encoding method is used by other drives to store the same amoun of data. These disks can store 128M of data.
Some incompatibilities exist among disk cartridges from different manufacturers.
For DOS compatibility, disks support 512 byte sectors. It connects two computers by their serial interfaces, elminating the need for each to have a modem. For two modems to communicate, they must use the same error-checking protocol, if any. The more efficient the error-checking, the slower it works. Mopier Multiple Original Printers is a class of printers with specific enhancements to support the heavy loads of large networks of computers.