Description: Identifies the serial number for the device. If the SERIAL-NUMBER object is set by the user, then setting the object does not need to be protected. If the SERIAL-NUMBER object is set at the factory, then the SERVICE-PASSWORD object must be set correctly before the SERIAL-NUMBER object is writable. If this is a writable object, the POS should indicate the maximum supported string length. If possible, encode the serial number in a symbol set (like Roman-8) that matches the ASCII character set and limit the characters used to ASCII characters. Additional information: The format of the LaserJet 5 serial number is: axxyyyzzzzz where: a = S (always) xx = 46 (the entity #) yyy = 0..9 & A..Z (the product code specific to LaserJet 5, probably 01L) zzzzz = 0..9 & A..Z omitting I,O,U (sequentially assigned alpha/num base 33 numbers) So it will typically look like S4601LXXXXX This value IS AFFECTED BY NVRAM resets, it is set to the default value of S4601LXXXXX, when a NVRAM init is done.