~]# lsusb
Bus 001 Device 006: ID 07b3:0454 Plustek, Inc.
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/lib/udev/rules.d/40-libsane.rules
# Plustek OpticSlim 2400 plus
ATTRS{idVendor}=="07b3", ATTRS{idProduct}=="0454", ENV{libsane_matched}="yes"
..............................................
/lib/udev/rules.d/50-udev-default.rules
# 'libusb' device nodes
SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", MODE="0666"