diff --git a/buildroot-external/rootfs-overlay/etc/modprobe.d/alsa-base.conf b/buildroot-external/rootfs-overlay/etc/modprobe.d/alsa-base.conf
new file mode 100644
index 00000000..58330e51
--- /dev/null
+++ b/buildroot-external/rootfs-overlay/etc/modprobe.d/alsa-base.conf
@@ -0,0 +1,3 @@
+options snd_usb_audio index=0
+options snd_bcm2835 index=1
+options snd slots=snd_usb_audio,snd_bcm2835