diff --git a/makefu/2configs/hw/nswitch.nix b/makefu/2configs/hw/nswitch.nix
new file mode 100644
index 000000000..56e122cbf
--- /dev/null
+++ b/makefu/2configs/hw/nswitch.nix
@@ -0,0 +1,14 @@
+{ config, lib, pkgs, ... }:
+
+{
+
+  users.extraUsers.${config.krebs.build.user.name}.extraGroups = [ "dialout" ];
+
+  # 1: USB
+  # 2: RCM
+  services.udev.extraRules = ''
+    SUBSYSTEM=="usb", ATTRS{idVendor}=="057e", ATTRS{idProduct}=="3000", MODE="0660" ,GROUP="dialout"
+    SUBSYSTEM=="usb", ATTRS{idVendor}=="0955", ATTRS{idProduct}=="7321", MODE="0660", GROUP="dialout"
+  '';
+}
+