The sub-unit location that is defined by the printer
manufacturer to further refine the location of this alert
within the designated sub-unit. The location is used in
conjunction with the Group and GroupIndex values; for
example, there is an alert in Input #2 at location number 7.
The value (-2) indicates unknown
Additional information:
The alert table in LaserJet 4500 will hold up to 32 entries. If the table is full and a new
alert occurs, the table will be managed as specified in the section 'Alert Table Management' of the Printer MIB
(RFC1759).