diff --git a/chuniio/config.c b/chuniio/config.c
index 580a056..07d78ad 100644
--- a/chuniio/config.c
+++ b/chuniio/config.c
@@ -57,7 +57,7 @@ void chuni_io_config_load(
                 filename);
     }
 
-    GetPrivateProfileStringW(L"slider", L"ledport", L"COM2", port_input, 6, filename);
+    GetPrivateProfileStringW(L"slider", L"ledport", L"COM5", port_input, 6, filename);
     wcsncpy(cfg->led_com, L"\\\\.\\", 4);
     wcsncat_s(cfg->led_com, 11, port_input, 6);
 }
diff --git a/dist/chuni/segatools.ini b/dist/chuni/segatools.ini
index 7724c30..ba75d61 100644
--- a/dist/chuni/segatools.ini
+++ b/dist/chuni/segatools.ini
@@ -82,3 +82,7 @@ coin=0x33
 ;cell31=0x53
 ;cell30=0x53
 ; ... etc ...
+
+; Enable slider LED serial output. This follows OpeNITHM Serial LED Protocol.
+; eg. COM5
+;ledport=