diff --git a/_debug_replacements.php b/_debug_replacements.php
index e393c6d..d4fd71f 100644
--- a/_debug_replacements.php
+++ b/_debug_replacements.php
@@ -87,6 +87,10 @@ return [
 
 	'sta_mac' => '5c:cf:7f:02:74:51',
 	'ap_mac' => '5e:cf:7f:02:74:51',
+	
+	'gpio2_conf' => '0',
+	'gpio4_conf' => '1',
+	'gpio5_conf' => '1',
 
 	'width' => '80',
 	'height' => '25',
diff --git a/lang/cs.php b/lang/cs.php
index d2cc109..ec4f1ec 100644
--- a/lang/cs.php
+++ b/lang/cs.php
@@ -265,6 +265,16 @@ return [
 		obrazovky a stránky se budou načítat rychleji. Nevýhodou je vyšší spotřeba a citlivost k~rušení.
 		',
 	'hwtuning.overclock' => 'Přetaktovat na 160~MHz',
+	
+	'gpio2_config' => 'Funkce GPIO2',
+	'gpio4_config' => 'Funkce GPIO4',
+	'gpio5_config' => 'Funkce GPIO5',
+	'gpio_config.off' => 'Vypnuto',
+	'gpio_config.off_2' => 'Debug UART Tx',
+	'gpio_config.out_initial0' => 'Výstup (výchozí stav 0)',
+	'gpio_config.out_initial1' => 'Výstup (výchozí stav 1)',
+	'gpio_config.in_pull' => 'Vstup (s pull-upem)',
+	'gpio_config.in_nopull' => 'Vstup (plovoucí)',
 
 	// Generic button / dialog labels
 
diff --git a/lang/de.php b/lang/de.php
index 384d7a7..2f5a924 100644
--- a/lang/de.php
+++ b/lang/de.php
@@ -266,6 +266,16 @@ return [
 		',
 	'hwtuning.overclock' => 'Auf 160MHz übertakten',
 
+	'gpio2_config' => 'GPIO2 function', // TODO translate
+	'gpio4_config' => 'GPIO4 function',
+	'gpio5_config' => 'GPIO5 function',
+	'gpio_config.off' => 'Disabled',
+	'gpio_config.off_2' => 'Debug UART Tx',
+	'gpio_config.out_initial0' => 'Output (initial 0)',
+	'gpio_config.out_initial1' => 'Output (initial 1)',
+	'gpio_config.in_pull' => 'Input (pull-up)',
+	'gpio_config.in_nopull' => 'Input (floating)',
+
 	// Generic button / dialog labels
 
 	'apply' => 'Bestätigen!',
diff --git a/lang/en.php b/lang/en.php
index b23b26f..7ab4489 100644
--- a/lang/en.php
+++ b/lang/en.php
@@ -266,6 +266,16 @@ return [
 		',
 	'hwtuning.overclock' => 'Overclock to 160MHz',
 
+	'gpio2_config' => 'GPIO2 function',
+	'gpio4_config' => 'GPIO4 function',
+	'gpio5_config' => 'GPIO5 function',
+	'gpio_config.off' => 'Disabled',
+	'gpio_config.off_2' => 'Debug UART Tx',
+	'gpio_config.out_initial0' => 'Output (initial 0)',
+	'gpio_config.out_initial1' => 'Output (initial 1)',
+	'gpio_config.in_pull' => 'Input (pull-up)',
+	'gpio_config.in_nopull' => 'Input (floating)',
+
 	// Generic button / dialog labels
 
 	'apply' => 'Apply!',
diff --git a/lang/hu.php b/lang/hu.php
index ded681a..7ecd29c 100644
--- a/lang/hu.php
+++ b/lang/hu.php
@@ -267,6 +267,16 @@ return [
 		',
 	'hwtuning.overclock' => 'Órajel emelése 160MHz-re',
 
+	'gpio2_config' => 'GPIO2 function', // TODO translate
+	'gpio4_config' => 'GPIO4 function',
+	'gpio5_config' => 'GPIO5 function',
+	'gpio_config.off' => 'Disabled',
+	'gpio_config.off_2' => 'Debug UART Tx',
+	'gpio_config.out_initial0' => 'Output (initial 0)',
+	'gpio_config.out_initial1' => 'Output (initial 1)',
+	'gpio_config.in_pull' => 'Input (pull-up)',
+	'gpio_config.in_nopull' => 'Input (floating)',
+
 	// Generic button / dialog labels
 
 	'apply' => 'Alkalmaz',
diff --git a/pages/cfg_system.php b/pages/cfg_system.php
index 7d3b9ec..85e8a78 100644
--- a/pages/cfg_system.php
+++ b/pages/cfg_system.php
@@ -63,6 +63,39 @@
 		--><span class="box" tabindex=0 role=checkbox></span>
 		<input type="hidden" id="overclock" name="overclock" value="%overclock%">
 	</div>
+	
+	<div class="Row">
+		<label for="gpio2_conf"><?= tr("gpio2_config") ?></label>
+		<select name="gpio2_conf" id="gpio2_conf">
+			<option value="0"><?= tr("gpio_config.off_2") ?></option>
+			<option value="1"><?= tr("gpio_config.out_initial0") ?></option>
+			<option value="2"><?= tr("gpio_config.out_initial1") ?></option>
+			<option value="3"><?= tr("gpio_config.in_pull") ?></option>
+			<option value="4"><?= tr("gpio_config.in_nopull") ?></option>
+		</select>
+	</div>
+	
+	<div class="Row">
+		<label for="gpio4_conf"><?= tr("gpio4_config") ?></label>
+		<select name="gpio4_conf" id="gpio4_conf">
+			<option value="0"><?= tr("gpio_config.off") ?></option>
+			<option value="1"><?= tr("gpio_config.out_initial0") ?></option>
+			<option value="2"><?= tr("gpio_config.out_initial1") ?></option>
+			<option value="3"><?= tr("gpio_config.in_pull") ?></option>
+			<option value="4"><?= tr("gpio_config.in_nopull") ?></option>
+		</select>
+	</div>
+	
+	<div class="Row">
+		<label for="gpio5_conf"><?= tr("gpio5_config") ?></label>
+		<select name="gpio5_conf" id="gpio5_conf">
+			<option value="0"><?= tr("gpio_config.off") ?></option>
+			<option value="1"><?= tr("gpio_config.out_initial0") ?></option>
+			<option value="2"><?= tr("gpio_config.out_initial1") ?></option>
+			<option value="3"><?= tr("gpio_config.in_pull") ?></option>
+			<option value="4"><?= tr("gpio_config.in_nopull") ?></option>
+		</select>
+	</div>
 
 	<div class="Row buttons">
 		<a class="button icn-ok" href="#" onclick="qs('#form-hw').submit()"><?= tr('apply') ?></a>
@@ -154,4 +187,7 @@ $NOFILL = 'readonly onfocus="this.removeAttribute(\'readonly\')" style="cursor:t
 	}
 
 	$('#pwlock').val(%pwlock%);
+	$('#gpio2_conf').val(%gpio2_conf%);
+	$('#gpio4_conf').val(%gpio4_conf%);
+	$('#gpio5_conf').val(%gpio5_conf%);
 </script>