/lib/udev/rules.d/40-mtkbabel.rules is in mtkbabel 0.8.3.1-1.1.
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 | ACTION!="add|change", GOTO="mtkbabel_rules_end"
SUBSYSTEM!="usb", GOTO="mtkbabel_rules_end"
ENV{DEVTYPE}!="usb_device", GOTO="mtkbabel_rules_end"
# i-Blue 747 GPS data logger
ATTRS{idVendor}=="0e8d", ATTRS{idProduct}=="3329", MODE="664", GROUP="plugdev"
LABEL="mtkbabel_rules_end"
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