/lib/udev/rules.d/66-xorg-synaptics-quirks.rules is in xserver-xorg-input-synaptics 1.7.4-0ubuntu1.
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 10 11 12 13 | ACTION!="add|change", GOTO="xorg_synaptics_quirks_end"
KERNEL!="event*", GOTO="xorg_synaptics_quirks_end"
ENV{ID_INPUT_TOUCHPAD}!="1", GOTO="xorg_synaptics_quirks_end"
# Placeholder for platform specific quirks needing
# ID_INPUT.tags to be set.
ATTR{[dmi/id]product_name}=="Inspiron 1011", ENV{ID_INPUT.tags}="inspiron_1011"
ATTR{[dmi/id]product_name}=="Inspiron 1012", ENV{ID_INPUT.tags}="inspiron_1012"
ATTR{[dmi/id]product_name}=="Inspiron 1120", ENV{ID_INPUT.tags}="inspiron_1120"
ATTR{[dmi/id]product_name}=="HP MiniNote 1000", ENV{ID_INPUT.tags}="mininote_1000"
LABEL="xorg_synaptics_quirks_end"
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