The LaserWriter IINT component that registers the handshake options can wear
out with excessive use. This is not true with the LaserWriter IINTX, since
the two printers store handshake options differently.
The component in the LaserWriter IINT that can wear out is an EEROM. This
EEROM may be written approximately 10,000 times before breakdown.
The LaserWriter IINTX employs a 2K battery-backed-up ZPRAM (Zero Power RAM)
equivalent to the EEROM of the LaserWriter IINT. This ZPRAM may be written
to an indefinite number of times.