diff --git a/hosts/server6/hardware-configuration.nix b/hosts/server6/hardware-configuration.nix
index 9df75c37..eb349193 100644
--- a/hosts/server6/hardware-configuration.nix
+++ b/hosts/server6/hardware-configuration.nix
@@ -18,11 +18,14 @@
   # still possible to use this option, but it's recommended to use it in conjunction
   # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
   networking.useDHCP = lib.mkDefault true;
+  # motherboard
   # networking.interfaces.eno2.useDHCP = lib.mkDefault true;
   # networking.interfaces.eno3.useDHCP = lib.mkDefault true;
   # networking.interfaces.eno4.useDHCP = lib.mkDefault true;
   # networking.interfaces.eno5.useDHCP = lib.mkDefault true;
+  # ipmi
   # networking.interfaces.enp0s29u1u1u5.useDHCP = lib.mkDefault true;
+  # PCIe expansion card
   # networking.interfaces.enp144s0.useDHCP = lib.mkDefault true;
   # networking.interfaces.enp144s0d1.useDHCP = lib.mkDefault true;