/lib/udev/rules.d/77-mm-usb-serial-adapters-greylist.rules is in modemmanager 1.4.0-1.
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 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | # do not edit this file, it will be overwritten on update
ACTION!="add|change|move", GOTO="mm_usb_serial_adapters_greylist_end"
SUBSYSTEM!="usb", GOTO="mm_usb_serial_adapters_greylist_end"
ENV{DEVTYPE}!="usb_device", GOTO="mm_usb_serial_adapters_greylist_end"
# Belkin F5U183 Serial Adapter
ATTRS{idVendor}=="050d", ATTRS{idProduct}=="0103", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# FTDI-based serial adapters
# FTDI does USB to serial converter ICs; and it's very likely that they'll
# never do modems themselves, so it should be safe to add a rule only based
# on the vendor Id.
ATTRS{idVendor}=="0403", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# ATEN Intl UC-232A (Prolific)
ATTRS{idVendor}=="0557", ATTRS{idProduct}=="2008", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# Prolific USB to Serial adapter
ATTRS{idVendor}=="067b", ATTRS{idProduct}=="2303", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# Magic Control Technology Corp adapters
ATTRS{idVendor}=="0711", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# Cygnal Integrated Products, Inc. CP210x
ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea60", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
ATTRS{idVendor}=="10c4", ATTRS{idProduct}=="ea71", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# QinHeng Electronics HL-340
ATTRS{idVendor}=="1a86", ATTRS{idProduct}=="7523", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# Atmel Corp. LUFA USB to Serial Adapter Project (Arduino)
ATTRS{idVendor}=="03eb", ATTRS{idProduct}=="204b", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
# Netchip Technology, Inc. Linux-USB Serial Gadget (CDC ACM mode)
ATTRS{idVendor}=="0525", ATTRS{idProduct}=="a4a7", ENV{ID_MM_DEVICE_MANUAL_SCAN_ONLY}="1"
LABEL="mm_usb_serial_adapters_greylist_end"
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