The desired (remotely specified) operating mode of the parallel port. The following map is used to determine mode availability and provides the definition for each mode: Available When npPortDesiredMode Definition 1 bitronics always EX will attempt to retrieve nibble mode back channel data from the printer. If the printer does not support bitronics, EX will default back to compatibility mode. 2 centronics npPortMaxModeAvailable >= 1 EX will only support compatibility (centronics) mode when talking to the printer 3 ecpWithNibbleMLC npPortMaxModeAvailable >= 1 EX will attempt to talk to the printer across MLC. This is done by using ECP in the forward direction and nibble-mode bitronics in the reverse direction. If the printer does not support both MLC and ECP, EX will fall back to regular bitronics, as described above. 4 ecpWithMLC npPortMaxModeAvailable >= 1 EX will attempt to talk to the printer across MLC. This is done by using ECP in both forward and reverse directions. If the printer does not support both MLC and ECP, EX will fall back to regular bitronics, as described above. 5 ecp npPortMaxModeAvailable >= 1 EX will attempt to talk to the printer using ECP in both the forward and reverse directions. If the printer does not support ECP, EX will fall back to regular bitronics, as described above. EX-ONLY