diff --git a/include/gamepad.hpp b/include/gamepad.hpp
index 410225bc..84cb5299 100644
--- a/include/gamepad.hpp
+++ b/include/gamepad.hpp
@@ -11,7 +11,7 @@ const int GAMEPAD_DRIVER = -10;
 
 
 struct GamepadInputDevice : MidiInputDevice {
-	int device;
+	int deviceId;
 };
 
 
@@ -19,9 +19,9 @@ struct GamepadInputDriver : MidiInputDriver {
 	GamepadInputDevice gamepadInputDevices[16];
 
 	GamepadInputDriver();
-	int getDeviceCount() override;
-	std::string getDeviceName(int device) override;
-	MidiInputDevice *getDevice(int device) override;
+	std::vector<int> getDeviceIds() override;
+	std::string getDeviceName(int deviceId) override;
+	MidiInputDevice *getDevice(int deviceId) override;
 };
 
 
diff --git a/include/midi.hpp b/include/midi.hpp
index bb573ad7..8663dc67 100644
--- a/include/midi.hpp
+++ b/include/midi.hpp
@@ -56,16 +56,16 @@ struct MidiOutputDevice : MidiIODevice {
 
 struct MidiIODriver {
 	virtual ~MidiIODriver() {}
-	virtual int getDeviceCount() = 0;
-	virtual std::string getDeviceName(int device) = 0;
+	virtual std::vector<int> getDeviceIds() = 0;
+	virtual std::string getDeviceName(int deviceId) = 0;
 };
 
 struct MidiInputDriver : MidiIODriver {
-	virtual MidiInputDevice *getDevice(int device) = 0;
+	virtual MidiInputDevice *getDevice(int deviceId) = 0;
 };
 
 struct MidiOutputDriver : MidiIODriver {
-	virtual MidiOutputDevice *getDevice(int device) = 0;
+	virtual MidiOutputDevice *getDevice(int deviceId) = 0;
 };
 
 ////////////////////
@@ -73,8 +73,8 @@ struct MidiOutputDriver : MidiIODriver {
 ////////////////////
 
 struct MidiIO {
-	int driver = -1;
-	int device = -1;
+	int driverId = -1;
+	int deviceId = -1;
 	/* For MIDI output, the channel to output messages.
 	For MIDI input, the channel to filter.
 	Set to -1 to allow all MIDI channels (for input).
@@ -84,13 +84,13 @@ struct MidiIO {
 
 	virtual ~MidiIO() {}
 
-	std::vector<int> getDrivers();
-	std::string getDriverName(int driver);
-	virtual void setDriver(int driver) = 0;
+	std::vector<int> getDriverIds();
+	std::string getDriverName(int driverId);
+	virtual void setDriverId(int driverId) = 0;
 
-	virtual int getDeviceCount() = 0;
-	virtual std::string getDeviceName(int device) = 0;
-	virtual void setDevice(int device) = 0;
+	virtual std::vector<int> getDeviceIds() = 0;
+	virtual std::string getDeviceName(int deviceId) = 0;
+	virtual void setDeviceId(int deviceId) = 0;
 
 	std::string getChannelName(int channel);
 	json_t *toJson();
@@ -100,17 +100,17 @@ struct MidiIO {
 
 struct MidiInput : MidiIO {
 	/** Not owned */
-	MidiInputDriver *midiInputDriver = NULL;
+	MidiInputDriver *driver = NULL;
 	/** Not owned, must unsubscribe when destructed */
-	MidiInputDevice *midiInputDevice = NULL;
+	MidiInputDevice *device = NULL;
 
 	MidiInput();
 	~MidiInput();
 
-	void setDriver(int driver) override;
-	int getDeviceCount() override;
-	std::string getDeviceName(int device) override;
-	void setDevice(int device) override;
+	void setDriverId(int driverId) override;
+	std::vector<int> getDeviceIds() override;
+	std::string getDeviceName(int deviceId) override;
+	void setDeviceId(int deviceId) override;
 
 	virtual void onMessage(MidiMessage message) {}
 };
@@ -128,13 +128,13 @@ struct MidiInputQueue : MidiInput {
 
 struct MidiOutput : MidiIO {
 	/** Not owned */
-	MidiOutputDriver *midiOutputDriver = NULL;
+	MidiOutputDriver *driver = NULL;
 	/** Not owned, must unsubscribe when destructed */
-	MidiOutputDevice *midiOutputDevice = NULL;
+	MidiOutputDevice *device = NULL;
 	MidiOutput();
 	~MidiOutput();
-	void setDriver(int driver) override;
-	void setDevice(int device) override;
+	void setDriverId(int driverId) override;
+	void setDeviceId(int deviceId) override;
 };
 
 
diff --git a/include/rtmidi.hpp b/include/rtmidi.hpp
index 987832d1..b765597b 100644
--- a/include/rtmidi.hpp
+++ b/include/rtmidi.hpp
@@ -18,11 +18,11 @@ struct RtMidiInputDriver : MidiInputDriver {
 	/** Just for querying MIDI driver information */
 	RtMidiIn *rtMidiIn;
 
-	RtMidiInputDriver(int driver);
+	RtMidiInputDriver(int driverId);
 	~RtMidiInputDriver();
-	int getDeviceCount() override;
-	std::string getDeviceName(int device) override;
-	MidiInputDevice *getDevice(int device) override;
+	std::vector<int> getDeviceIds() override;
+	std::string getDeviceName(int deviceId) override;
+	MidiInputDevice *getDevice(int deviceId) override;
 };
 
 
@@ -31,13 +31,13 @@ struct RtMidiInputDevice : MidiInputDevice {
 	/** Cached */
 	std::string deviceName;
 
-	RtMidiInputDevice(int driver, int device);
+	RtMidiInputDevice(int driverId, int deviceId);
 	~RtMidiInputDevice();
 };
 
 
 std::vector<int> rtmidiGetDrivers();
-MidiInputDriver *rtmidiGetInputDriver(int driver);
+MidiInputDriver *rtmidiGetInputDriver(int driverId);
 
 
 } // namespace rack
diff --git a/src/app/MidiWidget.cpp b/src/app/MidiWidget.cpp
index 33e41daa..39736c40 100644
--- a/src/app/MidiWidget.cpp
+++ b/src/app/MidiWidget.cpp
@@ -7,9 +7,9 @@ namespace rack {
 
 struct MidiDriverItem : MenuItem {
 	MidiIO *midiIO;
-	int driver;
+	int driverId;
 	void onAction(EventAction &e) override {
-		midiIO->setDriver(driver);
+		midiIO->setDriverId(driverId);
 	}
 };
 
@@ -18,25 +18,25 @@ struct MidiDriverChoice : LedDisplayChoice {
 	void onAction(EventAction &e) override {
 		Menu *menu = gScene->createMenu();
 		menu->addChild(construct<MenuLabel>(&MenuLabel::text, "MIDI driver"));
-		for (int driver : midiWidget->midiIO->getDrivers()) {
+		for (int driverId : midiWidget->midiIO->getDriverIds()) {
 			MidiDriverItem *item = new MidiDriverItem();
 			item->midiIO = midiWidget->midiIO;
-			item->driver = driver;
-			item->text = midiWidget->midiIO->getDriverName(driver);
-			item->rightText = CHECKMARK(item->driver == midiWidget->midiIO->driver);
+			item->driverId = driverId;
+			item->text = midiWidget->midiIO->getDriverName(driverId);
+			item->rightText = CHECKMARK(item->driverId == midiWidget->midiIO->driverId);
 			menu->addChild(item);
 		}
 	}
 	void step() override {
-		text = midiWidget->midiIO->getDriverName(midiWidget->midiIO->driver);
+		text = midiWidget->midiIO->getDriverName(midiWidget->midiIO->driverId);
 	}
 };
 
 struct MidiDeviceItem : MenuItem {
 	MidiIO *midiIO;
-	int device;
+	int deviceId;
 	void onAction(EventAction &e) override {
-		midiIO->setDevice(device);
+		midiIO->setDeviceId(deviceId);
 	}
 };
 
@@ -48,23 +48,22 @@ struct MidiDeviceChoice : LedDisplayChoice {
 		{
 			MidiDeviceItem *item = new MidiDeviceItem();
 			item->midiIO = midiWidget->midiIO;
-			item->device = -1;
+			item->deviceId = -1;
 			item->text = "(No device)";
-			item->rightText = CHECKMARK(item->device == midiWidget->midiIO->device);
+			item->rightText = CHECKMARK(item->deviceId == midiWidget->midiIO->deviceId);
 			menu->addChild(item);
 		}
-		int driverCount = midiWidget->midiIO->getDeviceCount();
-		for (int device = 0; device < driverCount; device++) {
+		for (int deviceId : midiWidget->midiIO->getDeviceIds()) {
 			MidiDeviceItem *item = new MidiDeviceItem();
 			item->midiIO = midiWidget->midiIO;
-			item->device = device;
-			item->text = midiWidget->midiIO->getDeviceName(device);
-			item->rightText = CHECKMARK(item->device == midiWidget->midiIO->device);
+			item->deviceId = deviceId;
+			item->text = midiWidget->midiIO->getDeviceName(deviceId);
+			item->rightText = CHECKMARK(item->deviceId == midiWidget->midiIO->deviceId);
 			menu->addChild(item);
 		}
 	}
 	void step() override {
-		text = midiWidget->midiIO->getDeviceName(midiWidget->midiIO->device);
+		text = midiWidget->midiIO->getDeviceName(midiWidget->midiIO->deviceId);
 		if (text.empty()) {
 			text = "(No device)";
 			color.a = 0.5f;
diff --git a/src/gamepad.cpp b/src/gamepad.cpp
index e30ade2b..a52c75a4 100644
--- a/src/gamepad.cpp
+++ b/src/gamepad.cpp
@@ -8,26 +8,36 @@ namespace rack {
 
 GamepadInputDriver::GamepadInputDriver() {
 	for (int i = 0; i < 16; i++) {
-		gamepadInputDevices[i].device = i;
+		gamepadInputDevices[i].deviceId = i;
 	}
 }
 
-int GamepadInputDriver::getDeviceCount() {
-	return 16;
+std::vector<int> GamepadInputDriver::getDeviceIds() {
+	std::vector<int> deviceIds;
+	for (int i = 0; i < 16; i++) {
+		if (glfwJoystickPresent(i)) {
+			deviceIds.push_back(i);
+		}
+	}
+	return deviceIds;
 }
 
-std::string GamepadInputDriver::getDeviceName(int device) {
-	assert(0 <= device && device < 16);
-	const char *name = glfwGetJoystickName(device);
+std::string GamepadInputDriver::getDeviceName(int deviceId) {
+	if (!(0 <= deviceId && deviceId < 16))
+		return "";
+
+	const char *name = glfwGetJoystickName(deviceId);
 	if (name) {
 		return name;
 	}
-	return stringf("Gamepad %d (unavailable)", device + 1);
+	return stringf("Gamepad %d (unavailable)", deviceId + 1);
 }
 
-MidiInputDevice *GamepadInputDriver::getDevice(int device) {
-	assert(0 <= device && device < 16);
-	return &gamepadInputDevices[device];
+MidiInputDevice *GamepadInputDriver::getDevice(int deviceId) {
+	if (!(0 <= deviceId && deviceId < 16))
+		return NULL;
+
+	return &gamepadInputDevices[deviceId];
 }
 
 
diff --git a/src/midi.cpp b/src/midi.cpp
index 5c6ec348..0c479956 100644
--- a/src/midi.cpp
+++ b/src/midi.cpp
@@ -40,16 +40,16 @@ void MidiInputDevice::onMessage(MidiMessage message) {
 // MidiIO
 ////////////////////
 
-std::vector<int> MidiIO::getDrivers() {
-	std::vector<int> drivers = rtmidiGetDrivers();
-	// Add custom drivers
-	drivers.push_back(BRIDGE_DRIVER);
-	drivers.push_back(GAMEPAD_DRIVER);
-	return drivers;
+std::vector<int> MidiIO::getDriverIds() {
+	std::vector<int> driverIds = rtmidiGetDrivers();
+	// Add custom driverIds
+	driverIds.push_back(BRIDGE_DRIVER);
+	driverIds.push_back(GAMEPAD_DRIVER);
+	return driverIds;
 }
 
-std::string MidiIO::getDriverName(int driver) {
-	switch (driver) {
+std::string MidiIO::getDriverName(int driverId) {
+	switch (driverId) {
 		case RtMidi::UNSPECIFIED: return "Unspecified";
 		case RtMidi::MACOSX_CORE: return "Core MIDI";
 		case RtMidi::LINUX_ALSA: return "ALSA";
@@ -71,8 +71,8 @@ std::string MidiIO::getChannelName(int channel) {
 
 json_t *MidiIO::toJson() {
 	json_t *rootJ = json_object();
-	json_object_set_new(rootJ, "driver", json_integer(driver));
-	std::string deviceName = getDeviceName(device);
+	json_object_set_new(rootJ, "driver", json_integer(driverId));
+	std::string deviceName = getDeviceName(deviceId);
 	if (!deviceName.empty())
 		json_object_set_new(rootJ, "deviceName", json_string(deviceName.c_str()));
 	json_object_set_new(rootJ, "channel", json_integer(channel));
@@ -82,16 +82,15 @@ json_t *MidiIO::toJson() {
 void MidiIO::fromJson(json_t *rootJ) {
 	json_t *driverJ = json_object_get(rootJ, "driver");
 	if (driverJ)
-		setDriver(json_integer_value(driverJ));
+		setDriverId(json_integer_value(driverJ));
 
 	json_t *deviceNameJ = json_object_get(rootJ, "deviceName");
 	if (deviceNameJ) {
 		std::string deviceName = json_string_value(deviceNameJ);
 		// Search for device with equal name
-		int deviceCount = getDeviceCount();
-		for (int device = 0; device < deviceCount; device++) {
-			if (getDeviceName(device) == deviceName) {
-				setDevice(device);
+		for (int deviceId : getDeviceIds()) {
+			if (getDeviceName(deviceId) == deviceName) {
+				setDeviceId(deviceId);
 				break;
 			}
 		}
@@ -111,52 +110,66 @@ MidiInput::MidiInput() {
 }
 
 MidiInput::~MidiInput() {
-	setDriver(-1);
+	setDriverId(-1);
 }
 
-void MidiInput::setDriver(int driver) {
-	setDevice(-1);
-	if (midiInputDriver) {
-		midiInputDriver = NULL;
+void MidiInput::setDriverId(int driverId) {
+	// Destroy driver
+	setDeviceId(-1);
+	if (driver) {
+		driver = NULL;
 	}
+	this->driverId = -1;
 
-	if (driver >= 0) {
-		midiInputDriver = rtmidiGetInputDriver(driver);
+	// Create driver
+	if (driverId >= 0) {
+		driver = rtmidiGetInputDriver(driverId);
 	}
-	else if (driver == BRIDGE_DRIVER) {
+	else if (driverId == BRIDGE_DRIVER) {
 		// TODO
 	}
-	else if (driver == GAMEPAD_DRIVER) {
-		midiInputDriver = gamepadGetInputDriver();
+	else if (driverId == GAMEPAD_DRIVER) {
+		driver = gamepadGetInputDriver();
+	}
+
+	// Set driverId
+	if (driver) {
+		this->driverId = driverId;
 	}
-	this->driver = driver;
 }
 
-int MidiInput::getDeviceCount() {
-	if (midiInputDriver) {
-		return midiInputDriver->getDeviceCount();
+std::vector<int> MidiInput::getDeviceIds() {
+	if (driver) {
+		return driver->getDeviceIds();
 	}
-	return 0;
+	return {};
 }
 
-std::string MidiInput::getDeviceName(int device) {
-	if (midiInputDriver) {
-		return midiInputDriver->getDeviceName(device);
+std::string MidiInput::getDeviceName(int deviceId) {
+	if (driver) {
+		return driver->getDeviceName(deviceId);
 	}
 	return "";
 }
 
-void MidiInput::setDevice(int device) {
-	if (midiInputDevice) {
-		midiInputDevice->unsubscribe(this);
-		midiInputDevice = NULL;
+void MidiInput::setDeviceId(int deviceId) {
+	// Destroy device
+	if (device) {
+		device->unsubscribe(this);
+		device = NULL;
+	}
+	this->deviceId = -1;
+
+	// Create device
+	if (driver && deviceId >= 0) {
+		device = driver->getDevice(deviceId);
+		device->subscribe(this);
 	}
 
-	if (midiInputDriver && device >= 0) {
-		midiInputDevice = midiInputDriver->getDevice(device);
-		midiInputDevice->subscribe(this);
+	// Set deviceId
+	if (device) {
+		this->deviceId = deviceId;
 	}
-	this->device = device;
 }
 
 void MidiInputQueue::onMessage(MidiMessage message) {
@@ -192,11 +205,11 @@ MidiOutput::~MidiOutput() {
 	// TODO
 }
 
-void MidiOutput::setDriver(int driver) {
+void MidiOutput::setDriverId(int driverId) {
 	// TODO
 }
 
-void MidiOutput::setDevice(int device) {
+void MidiOutput::setDeviceId(int deviceId) {
 	// TODO
 }
 
diff --git a/src/rtmidi.cpp b/src/rtmidi.cpp
index f870d23d..74f0be40 100644
--- a/src/rtmidi.cpp
+++ b/src/rtmidi.cpp
@@ -5,8 +5,8 @@
 namespace rack {
 
 
-RtMidiInputDriver::RtMidiInputDriver(int driver) {
-	rtMidiIn = new RtMidiIn((RtMidi::Api) driver);
+RtMidiInputDriver::RtMidiInputDriver(int driverId) {
+	rtMidiIn = new RtMidiIn((RtMidi::Api) driverId);
 	assert(rtMidiIn);
 }
 
@@ -14,20 +14,24 @@ RtMidiInputDriver::~RtMidiInputDriver() {
 	delete rtMidiIn;
 }
 
-int RtMidiInputDriver::getDeviceCount() {
-	return rtMidiIn->getPortCount();
+std::vector<int> RtMidiInputDriver::getDeviceIds() {
+	int count = rtMidiIn->getPortCount();;
+	std::vector<int> deviceIds;
+	for (int i = 0; i < count; i++)
+		deviceIds.push_back(i);
+	return deviceIds;
 }
 
-std::string RtMidiInputDriver::getDeviceName(int device) {
-	if (device >= 0) {
-		return rtMidiIn->getPortName(device);
+std::string RtMidiInputDriver::getDeviceName(int deviceId) {
+	if (deviceId >= 0) {
+		return rtMidiIn->getPortName(deviceId);
 	}
 	return "";
 }
 
-MidiInputDevice *RtMidiInputDriver::getDevice(int device) {
+MidiInputDevice *RtMidiInputDriver::getDevice(int deviceId) {
 	// TODO Get from cache
-	return new RtMidiInputDevice(rtMidiIn->getCurrentApi(), device);
+	return new RtMidiInputDevice(rtMidiIn->getCurrentApi(), deviceId);
 }
 
 
@@ -48,8 +52,8 @@ static void midiInputCallback(double timeStamp, std::vector<unsigned char> *mess
 	midiInputDevice->onMessage(msg);
 }
 
-RtMidiInputDevice::RtMidiInputDevice(int driver, int device) {
-	rtMidiIn = new RtMidiIn((RtMidi::Api) driver, "VCV Rack");
+RtMidiInputDevice::RtMidiInputDevice(int driverId, int deviceId) {
+	rtMidiIn = new RtMidiIn((RtMidi::Api) driverId, "VCV Rack");
 	rtMidiIn->ignoreTypes(false, false, false);
 	rtMidiIn->setCallback(midiInputCallback, this);
 }
@@ -73,11 +77,11 @@ std::vector<int> rtmidiGetDrivers() {
 
 static std::map<int, RtMidiInputDriver*> rtmidiInputDrivers;
 
-MidiInputDriver *rtmidiGetInputDriver(int driver) {
+MidiInputDriver *rtmidiGetInputDriver(int driverId) {
 	// Lazily create RtMidiInputDriver
-	RtMidiInputDriver *d = rtmidiInputDrivers[driver];
+	RtMidiInputDriver *d = rtmidiInputDrivers[driverId];
 	if (!d) {
-		rtmidiInputDrivers[driver] = d = new RtMidiInputDriver(driver);
+		rtmidiInputDrivers[driverId] = d = new RtMidiInputDriver(driverId);
 	}
 	return d;
 }