diff --git a/packages/uhk-common/src/models/device-connection-state.ts b/packages/uhk-common/src/models/device-connection-state.ts
index 3310dfed..a366ef56 100644
--- a/packages/uhk-common/src/models/device-connection-state.ts
+++ b/packages/uhk-common/src/models/device-connection-state.ts
@@ -6,6 +6,8 @@ import { UhkDeviceProduct } from './uhk-products.js';
 
 export interface DeviceConnectionState {
     bleAddress?: string;
+    // UHK80 connected via bluetooth
+    bleDeviceConnected: boolean;
     isPairedWithDongle?: boolean;
     connectedDevice?: UhkDeviceProduct;
     dongle: Dongle;
@@ -13,6 +15,7 @@ export interface DeviceConnectionState {
     hasPermission: boolean;
     bootloaderActive: boolean;
     isMacroStatusDirty: boolean;
+    leftHalfDetected: boolean;
     /**
      * True if more than 1 UHK device connected.
      */
diff --git a/packages/uhk-common/src/models/uhk-products.ts b/packages/uhk-common/src/models/uhk-products.ts
index a7dbbaf3..5c093bec 100644
--- a/packages/uhk-common/src/models/uhk-products.ts
+++ b/packages/uhk-common/src/models/uhk-products.ts
@@ -6,6 +6,7 @@ import { UHK_MODULE_IDS, UHK_MODULE_IDS_TYPE } from './uhk-module-ids.js';
 
 export const UHK_VENDOR_ID_OLD = 0x1D50; // decimal 7504
 export const UHK_VENDOR_ID = 0x37A8; // decimal 14248
+export const UHK_BLE_MIN_PRODUCT_iD = 0x8000; // decimal 32768
 
 export interface VidPidPair {
     vid: number;
diff --git a/packages/uhk-usb/src/uhk-hid-device.ts b/packages/uhk-usb/src/uhk-hid-device.ts
index 8b9c3ef7..1c99ad02 100644
--- a/packages/uhk-usb/src/uhk-hid-device.ts
+++ b/packages/uhk-usb/src/uhk-hid-device.ts
@@ -21,9 +21,11 @@ import {
     RightSlotModules,
     UdevRulesInfo,
     UhkBuffer,
+    UHK_BLE_MIN_PRODUCT_iD,
     UHK_DONGLE,
     UHK_80_DEVICE,
     UHK_80_DEVICE_LEFT,
+    UHK_VENDOR_ID,
 } from 'uhk-common';
 import {
     DevicePropertyIds,
@@ -316,6 +318,7 @@ export class UhkHidDevice {
         const devs = await this.getUhkDevices();
         const result: DeviceConnectionState = {
             bootloaderActive: false,
+            bleDeviceConnected: false,
             communicationInterfaceAvailable: false,
             dongle: {
                 bootloaderActive: false,
@@ -332,6 +335,7 @@ export class UhkHidDevice {
             },
             hardwareModules: {},
             isMacroStatusDirty: false,
+            leftHalfDetected: false,
             multiDevice: await getNumberOfConnectedDevices(this.options) > 1,
             udevRulesInfo: await this.getUdevInfoAsync(),
         };
@@ -373,9 +377,16 @@ export class UhkHidDevice {
 
                 if (isUhkCommunicationInterface(dev)) {
                     result.communicationInterfaceAvailable = true;
-                } else if (isBootloader(dev)) {
+                }
+                else if (isBootloader(dev)) {
                     result.bootloaderActive = true;
                 }
+                else if (dev.vendorId === UHK_VENDOR_ID && dev.productId >= UHK_BLE_MIN_PRODUCT_iD) {
+                    result.bleDeviceConnected = true;
+                }
+                else if (UHK_80_DEVICE_LEFT.keyboard.some(vidPid => dev.vendorId === vidPid.vid && dev.productId === vidPid.pid)) {
+                    result.leftHalfDetected = true;
+                }
             }
 
             if (isDongleCommunicationDevice(dev)) {
diff --git a/packages/uhk-web/src/app/components/missing-device/missing-device.component.html b/packages/uhk-web/src/app/components/missing-device/missing-device.component.html
index bd23401f..4f7609af 100644
--- a/packages/uhk-web/src/app/components/missing-device/missing-device.component.html
+++ b/packages/uhk-web/src/app/components/missing-device/missing-device.component.html
@@ -1,3 +1,4 @@
 <uhk-message [header]="state.header"
              [subtitle]="state.subtitle"
+             [description]="state.description"
              [showLogo]="true"></uhk-message>
diff --git a/packages/uhk-web/src/app/components/uhk-message/uhk-message.component.html b/packages/uhk-web/src/app/components/uhk-message/uhk-message.component.html
index 2120ad18..3fe18cb5 100644
--- a/packages/uhk-web/src/app/components/uhk-message/uhk-message.component.html
+++ b/packages/uhk-web/src/app/components/uhk-message/uhk-message.component.html
@@ -7,5 +7,6 @@
         <h1> {{ header }} </h1>
         <h2 *ngIf="!smallText"> {{ subtitle }} </h2>
         <div *ngIf="smallText"> {{ subtitle }} </div>
+        <p *ngIf="description"> {{ description }} </p>
     </div>
 </div>
diff --git a/packages/uhk-web/src/app/components/uhk-message/uhk-message.component.ts b/packages/uhk-web/src/app/components/uhk-message/uhk-message.component.ts
index 42757d7a..a81dddb3 100644
--- a/packages/uhk-web/src/app/components/uhk-message/uhk-message.component.ts
+++ b/packages/uhk-web/src/app/components/uhk-message/uhk-message.component.ts
@@ -7,6 +7,7 @@ import { Component, Input, ChangeDetectionStrategy } from '@angular/core';
     changeDetection: ChangeDetectionStrategy.OnPush
 })
 export class UhkMessageComponent {
+    @Input() description: string;
     @Input() header: string;
     @Input() subtitle: string;
     @Input() rotateLogo = false;
diff --git a/packages/uhk-web/src/app/models/missing-device-state.ts b/packages/uhk-web/src/app/models/missing-device-state.ts
index fd6e436a..7efa0b83 100644
--- a/packages/uhk-web/src/app/models/missing-device-state.ts
+++ b/packages/uhk-web/src/app/models/missing-device-state.ts
@@ -1,4 +1,5 @@
 export interface MissingDeviceState {
     header: string;
     subtitle: string;
+    description?: string;
 }
diff --git a/packages/uhk-web/src/app/store/reducers/device.ts b/packages/uhk-web/src/app/store/reducers/device.ts
index 726be43f..28f1c952 100644
--- a/packages/uhk-web/src/app/store/reducers/device.ts
+++ b/packages/uhk-web/src/app/store/reducers/device.ts
@@ -27,6 +27,7 @@ import { getSaveToKeyboardButtonState, initProgressButtonState, ProgressButtonSt
 
 export interface State {
     bleAddress?: string;
+    bleDeviceConnected: boolean;
     dongle?: Dongle;
     isKeyboardLayoutChanging: boolean;
     isPairedWithDongle?: boolean;
@@ -36,6 +37,7 @@ export interface State {
     deviceConnectionStateLoaded: boolean;
     keyboardHalvesAlwaysJoined: boolean;
     leftHalfBootloaderActive: boolean;
+    leftHalfDetected: boolean;
     multiDevice: boolean;
     communicationInterfaceAvailable: boolean;
     saveToKeyboard: ProgressButtonState;
@@ -54,12 +56,14 @@ export interface State {
 }
 
 export const initialState: State = {
+    bleDeviceConnected: false,
     isKeyboardLayoutChanging: false,
     hasPermission: true,
     bootloaderActive: false,
     deviceConnectionStateLoaded: false,
     keyboardHalvesAlwaysJoined: false,
     leftHalfBootloaderActive: false,
+    leftHalfDetected: false,
     multiDevice: false,
     communicationInterfaceAvailable: true,
     saveToKeyboard: initProgressButtonState,
@@ -124,15 +128,17 @@ export function reducer(state = initialState, action: Action): State {
             return {
                 ...state,
                 bleAddress: data.bleAddress,
+                bleDeviceConnected: data.bleDeviceConnected,
                 dongle: data.dongle,
                 isPairedWithDongle: data.isPairedWithDongle,
                 connectedDevice: data.connectedDevice,
                 deviceConnectionStateLoaded: true,
-                leftHalfBootloaderActive: data.leftHalfBootloaderActive,
                 hasPermission: data.hasPermission,
                 communicationInterfaceAvailable: data.communicationInterfaceAvailable,
                 bootloaderActive: data.bootloaderActive,
                 halvesInfo: data.halvesInfo,
+                leftHalfBootloaderActive: data.leftHalfBootloaderActive,
+                leftHalfDetected: data.leftHalfDetected,
                 modules: data.hardwareModules,
                 multiDevice: data.multiDevice,
                 udevRuleInfo: data.udevRulesInfo,
@@ -292,6 +298,29 @@ export const getMissingDeviceState = (state: State): MissingDeviceState => {
         };
     }
 
+    if (!state.connectedDevice) {
+        if (state.bleDeviceConnected) {
+            return {
+                header: 'UHK 80 connected via BLE',
+                subtitle: 'Disconnect BLE and connect your UHK via its right USB port!'
+            };
+        }
+
+        if (state.dongle?.serialNumber) {
+            return {
+                header: 'Dongle connected',
+                subtitle: 'Please connect the UHK right half via USB cable!'
+            };
+        }
+
+        if (state.leftHalfDetected) {
+            return {
+                header: 'UHK 80 left half connected',
+                subtitle: 'Please connect the right half instead!'
+            };
+        }
+    }
+
     if (state.connectedDevice && !state.communicationInterfaceAvailable) {
         return {
             header: 'Cannot find your UHK',
@@ -300,6 +329,7 @@ export const getMissingDeviceState = (state: State): MissingDeviceState => {
     }
 
     return {
+        description: 'If you have a UHK 80, connect its right half via USB, and ensure it\'s not connected to a dongle or BLE host!',
         header: 'Cannot find your UHK',
         subtitle: 'Please plug it in!'
     };