diff --git a/system-bin/upnet b/system-bin/upnet
index 8594bc2..7acd4fb 100755
--- a/system-bin/upnet
+++ b/system-bin/upnet
@@ -8,6 +8,7 @@ fi
 
 # Change the ASPM mode using the Link Control Register according to https://wireless.wiki.kernel.org/en/users/documentation/aspm#enabling_aspm_with_setpci (requires pciutils)
 if command -v setpci >/dev/null; then
+  # Replace 00:1c.5 if needed. Execute `lspci | grep -i wifi | awk '{print $1}'`, then have in mind that result. Now execute `lspci -t` and see where that value belongs.
   if setpci -s 00:1c.5 0x50.B=0x40 && sleep 1 && modprobe rtwpci; then
     sleep 2
   # Uncomment the next line and change it to match your network services and init in use.