--- /dev/null
+# do not edit this file, it will be overwritten on update
+
+ACTION=="remove", GOTO="persistent_alsa_end"
+SUBSYSTEM!="sound", GOTO="persistent_alsa_end"
+KERNEL!="controlC[0-9]*", GOTO="persistent_alsa_end"
+
+SUBSYSTEMS=="usb", ENV{ID_MODEL}=="", IMPORT{builtin}="usb_id"
+ENV{ID_SERIAL}=="?*", ENV{ID_USB_INTERFACE_NUM}=="?*", SYMLINK+="snd/by-id/$env{ID_BUS}-$env{ID_SERIAL}-$env{ID_USB_INTERFACE_NUM}"
+ENV{ID_SERIAL}=="?*", ENV{ID_USB_INTERFACE_NUM}=="", SYMLINK+="snd/by-id/$env{ID_BUS}-$env{ID_SERIAL}"
+
+IMPORT{builtin}="path_id"
+ENV{ID_PATH}=="?*", SYMLINK+="snd/by-path/$env{ID_PATH}"
+
+LABEL="persistent_alsa_end"