diff --git a/.config/i3/i3blocks.conf b/.config/i3/i3blocks.conf
index 39d7e05..f8d453a 100644
--- a/.config/i3/i3blocks.conf
+++ b/.config/i3/i3blocks.conf
@@ -150,6 +150,10 @@ interval=1
 full_text=
 command=~/.config/i3/scripts/keyhint
 
+# power-profiles-daemon implementation:
+# needs package power-profiles-daemon installed and the service running see here:
+# https://wiki.archlinux.org/title/CPU_frequency_scaling#power-profiles-daemon
+
 #set power-profile
 [ppd_menu]
 full_text=