Lexmark 160+ GB Hard Disk Use a hard disk to buffer print jobs, collate large jobs or to store forms, fonts or macros. Features These key functions are enabled when an optional hard disk is installed: Job Building, Printer lockout, storage used by Application Solutions such as Forms Merge Job Buffering (print spooling), email spooling, font & macro storage, User-based billing, Job Park (through a power-off & power-on cycle), hard disk-related administration (Disk wiping, Disk encryption, Disk diagnostics). The Disk Encryption function provides a randomly generated encryption key used to encrypt all data stored on the hard disk. This key generated by each printer is unique to that specific printer. With Printing Lockout, a disk may also be locked with a user PIN. This prevents any submitted jobs from printing. All held jobs are stored on the hard disk until it is unlocked. Disk Encryption should be used with this setting. Compatible products Lexmark: MX17de, MX18de, MX11de, MX710de, CS517de, CS510de, CS510dte, MS817dn, MS818dn, MS812de, MS812dn, MS810de, MS811dn, MS810dn, MS812dtn, MS810n, MS811n, MS810dtn, MS811dtn, MS711dn, MS710dn, MS911de