# USB scanners
ENV{libsane_matched}=="yes", ENV{ACL_MANAGE}="1"
+# HPLIP devices (necessary for ink level check and HP tool maintenance)
+ENV{ID_HPLIP}=="1", ENV{ACL_MANAGE}="1"
+
# optical drives
SUBSYSTEM=="block", ENV{ID_CDROM}=="1", ENV{ACL_MANAGE}="1"