diff --git a/.gitignore b/.gitignore
index 8195664..25e933e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 build/bin
 projects
+mapping
 node_modules
 frontend/.vscode
 frontend/dist
diff --git a/hardware/MIDIFinder.go b/hardware/MIDIFinder.go
index 62b46af..d062ef2 100644
--- a/hardware/MIDIFinder.go
+++ b/hardware/MIDIFinder.go
@@ -242,18 +242,19 @@ func (f *MIDIFinder) scanPeripherals(ctx context.Context) error {
 		}
 
 		baseName := normalizeName(port.String())
+		sn := strings.ReplaceAll(strings.ToLower(baseName), " ", "_")
 
-		if _, ok := currentMap[baseName]; !ok {
-			currentMap[baseName] = &MIDIPeripheral{
+		if _, ok := currentMap[sn]; !ok {
+			currentMap[sn] = &MIDIPeripheral{
 				info: PeripheralInfo{
 					Name:         baseName,
-					SerialNumber: baseName,
+					SerialNumber: sn,
 					ProtocolName: "MIDI",
 				},
 			}
 		}
 
-		currentMap[baseName].inputPorts = append(currentMap[baseName].inputPorts, port)
+		currentMap[sn].inputPorts = append(currentMap[sn].inputPorts, port)
 		log.Info().Any("peripherals", currentMap).Msg("available MIDI IN ports")
 	}
 
@@ -270,17 +271,19 @@ func (f *MIDIFinder) scanPeripherals(ctx context.Context) error {
 		}
 		baseName := normalizeName(port.String())
 
-		if _, ok := currentMap[baseName]; !ok {
-			currentMap[baseName] = &MIDIPeripheral{
+		sn := strings.ReplaceAll(strings.ToLower(baseName), " ", "_")
+
+		if _, ok := currentMap[sn]; !ok {
+			currentMap[sn] = &MIDIPeripheral{
 				info: PeripheralInfo{
 					Name:         baseName,
-					SerialNumber: baseName,
+					SerialNumber: sn,
 					ProtocolName: "MIDI",
 				},
 			}
 		}
 
-		currentMap[baseName].outputsPorts = append(currentMap[baseName].outputsPorts, port)
+		currentMap[sn].outputsPorts = append(currentMap[sn].outputsPorts, port)
 		log.Info().Any("peripherals", currentMap).Msg("available MIDI OUT ports")
 	}
 
diff --git a/hardware/MIDIPeripheral.go b/hardware/MIDIPeripheral.go
index b54a564..09d8243 100644
--- a/hardware/MIDIPeripheral.go
+++ b/hardware/MIDIPeripheral.go
@@ -10,15 +10,24 @@ import (
 	"gitlab.com/gomidi/midi"
 )
 
+// MIDIDevice represents the device to control
+type MIDIDevice struct {
+	ID      string      // Device ID
+	Mapping MappingInfo // Device mapping configuration
+}
+
+// ------------------- //
+
 // MIDIPeripheral contains the data of a MIDI peripheral
 type MIDIPeripheral struct {
 	wg sync.WaitGroup
 
 	inputPorts   []midi.In
 	outputsPorts []midi.Out
+	info         PeripheralInfo         // The peripheral info
+	settings     map[string]interface{} // The settings of the peripheral
 
-	info     PeripheralInfo         // The peripheral info
-	settings map[string]interface{} // The settings of the peripheral
+	devices []MIDIDevice // All the MIDI devices that the peripheral can handle
 }
 
 // NewMIDIPeripheral creates a new MIDI peripheral
diff --git a/hardware/interfaces.go b/hardware/interfaces.go
index 6c9ea82..dc8308d 100644
--- a/hardware/interfaces.go
+++ b/hardware/interfaces.go
@@ -2,6 +2,21 @@ package hardware
 
 import "context"
 
+// MappingInfo is the configuration for each device
+type MappingInfo struct {
+	DeviceInfo struct {
+		Name         string `yaml:"name"`
+		Manufacturer string `yaml:"manufacturer"`
+		Type         string `yaml:"type"`
+	} `yaml:"device"`
+	Features map[string]any `yaml:"features"`
+}
+
+// Device represents the methods used to manage a device (logic element include in a Peripheral)
+type Device interface {
+	Configure() error // Load the mapping for the device
+}
+
 // Peripheral represents the methods used to manage a peripheral (input or output hardware)
 type Peripheral interface {
 	Connect(context.Context) error                         // Connect the peripheral
@@ -9,12 +24,15 @@ type Peripheral interface {
 	Disconnect(context.Context) error                      // Disconnect the peripheral
 	Activate(context.Context) error                        // Activate the peripheral
 	Deactivate(context.Context) error                      // Deactivate the peripheral
+	AddDevice(Device) error                                // Add a device to the peripheral
+	RemoveDevice(Device) error                             // Remove a device to the peripheral
+	GetSettings() map[string]any                           // Get the peripheral settings
 	SetSettings(context.Context, map[string]any) error     // Set a peripheral setting
 	SetDeviceProperty(context.Context, uint32, byte) error // Update a device property
 	WaitStop() error                                       // Properly close the peripheral
 
-	GetInfo() PeripheralInfo     // Get the peripheral information
-	GetSettings() map[string]any // Get the peripheral settings
+	GetInfo() PeripheralInfo // Get the peripheral information
+
 }
 
 // PeripheralInfo represents a peripheral information