# Rigol DS2000 series
ATTRS{idVendor}=="1ab1", ATTRS{idProduct}=="04b0", ENV{ID_SIGROK}="1"
+# Rigol DS4000 series
+ATTRS{idVendor}=="1ab1", ATTRS{idProduct}=="04b1", ENV{ID_SIGROK}="1"
+
# Rigol DG4000 series
ATTRS{idVendor}=="1ab1", ATTRS{idProduct}=="0641", ENV{ID_SIGROK}="1"