/lib/udev/rules.d/77-mm-pcmcia-device-blacklist.rules is in modemmanager 1.4.12-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | # do not edit this file, it will be overwritten on update
ACTION!="add|change|move", GOTO="mm_pcmcia_device_blacklist_end"
SUBSYSTEM!="pcmcia", GOTO="mm_pcmcia_device_blacklist_end"
# Gemplus Serial Port smartcard adapter
ATTRS{prod_id1}=="Gemplus", ATTRS{prod_id2}=="SerialPort", ATTRS{prod_id3}=="GemPC Card", ENV{ID_MM_DEVICE_IGNORE}="1"
LABEL="mm_pcmcia_device_blacklist_end"
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