diff --git a/libs/api-devices-testing/.babelrc b/libs/api-devices-testing/.babelrc
new file mode 100644
index 000000000..1ea870ead
--- /dev/null
+++ b/libs/api-devices-testing/.babelrc
@@ -0,0 +1,12 @@
+{
+  "presets": [
+    [
+      "@nx/react/babel",
+      {
+        "runtime": "automatic",
+        "useBuiltIns": "usage"
+      }
+    ]
+  ],
+  "plugins": []
+}
diff --git a/libs/api-devices-testing/.eslintrc.json b/libs/api-devices-testing/.eslintrc.json
new file mode 100644
index 000000000..d3e61a2ea
--- /dev/null
+++ b/libs/api-devices-testing/.eslintrc.json
@@ -0,0 +1,18 @@
+{
+  "extends": ["../../.eslintrc.js"],
+  "ignorePatterns": ["!**/*"],
+  "overrides": [
+    {
+      "files": ["*.ts", "*.tsx", "*.js", "*.jsx"],
+      "rules": {}
+    },
+    {
+      "files": ["*.ts", "*.tsx"],
+      "rules": {}
+    },
+    {
+      "files": ["*.js", "*.jsx"],
+      "rules": {}
+    }
+  ]
+}
diff --git a/libs/api-devices-testing/README.md b/libs/api-devices-testing/README.md
new file mode 100644
index 000000000..c6a5fb15c
--- /dev/null
+++ b/libs/api-devices-testing/README.md
@@ -0,0 +1,7 @@
+# api-devices-testing
+
+This library was generated with [Nx](https://nx.dev).
+
+## Running unit tests
+
+Run `nx test api-devices-testing` to execute the unit tests via [Jest](https://jestjs.io).
diff --git a/libs/api-devices-testing/jest.config.ts b/libs/api-devices-testing/jest.config.ts
new file mode 100644
index 000000000..a64a8d301
--- /dev/null
+++ b/libs/api-devices-testing/jest.config.ts
@@ -0,0 +1,12 @@
+/* eslint-disable */
+export default {
+  displayName: "api-devices-testing",
+  preset: "../../jest.preset.js",
+  transform: {
+    "^(?!.*\\.(js|jsx|ts|tsx|css|json)$)": "@nx/react/plugins/jest",
+    "^.+\\.[tj]sx?$": ["babel-jest", { presets: ["@nx/react/babel"] }],
+  },
+  moduleFileExtensions: ["ts", "tsx", "js", "jsx"],
+  coverageDirectory: "../../coverage/libs/api-devices-testing",
+  maxWorkers: 1,
+}
diff --git a/libs/api-devices-testing/project.json b/libs/api-devices-testing/project.json
new file mode 100644
index 000000000..1e16cc357
--- /dev/null
+++ b/libs/api-devices-testing/project.json
@@ -0,0 +1,20 @@
+{
+  "name": "api-devices-testing",
+  "$schema": "../../node_modules/nx/schemas/project-schema.json",
+  "sourceRoot": "libs/api-devices-testing/src",
+  "projectType": "library",
+  "tags": [],
+  "targets": {
+    "lint": {
+      "executor": "@nx/eslint:lint",
+      "outputs": ["{options.outputFile}"]
+    },
+    "test": {
+      "executor": "@nx/jest:jest",
+      "outputs": ["{workspaceRoot}/coverage/{projectRoot}"],
+      "options": {
+        "jestConfig": "libs/api-devices-testing/jest.config.ts"
+      }
+    }
+  }
+}
diff --git a/libs/api-devices-testing/src/lib/api-configuration.spec.tsx b/libs/api-devices-testing/src/lib/api-configuration.spec.tsx
new file mode 100644
index 000000000..42dc16fbe
--- /dev/null
+++ b/libs/api-devices-testing/src/lib/api-configuration.spec.tsx
@@ -0,0 +1,50 @@
+/**
+ * Copyright (c) Mudita sp. z o.o. All rights reserved.
+ * For licensing, see https://github.com/mudita/mudita-center/blob/master/LICENSE.md
+ */
+
+import { DeviceProtocol } from "device-protocol/feature"
+import { setKompaktConnection } from "./helpers/set-connection"
+import { APIConfigService } from "device/feature"
+
+jest.mock("shared/utils", () => {
+  return { callRenderer: () => {} }
+})
+jest.mock("Core/device-manager/services/usb-devices/usb-devices.helper", () => {
+  return { getUsbDevices: () => {} }
+})
+jest.mock("electron-better-ipc", () => {
+  return {
+    ipcMain: {
+      emit: () => {},
+    },
+  }
+})
+
+describe("API configuration", () => {
+  let deviceProtocol: DeviceProtocol | undefined = undefined
+
+  beforeEach(async () => {
+    deviceProtocol = await setKompaktConnection()
+  })
+
+  afterEach(async () => {
+    await deviceProtocol?.activeDevice?.disconnect()
+  }, 10000)
+
+  it("should receive API configuration", async () => {
+    expect(deviceProtocol?.devices).toHaveLength(1)
+
+    if (deviceProtocol === undefined) {
+      return
+    }
+
+    deviceProtocol.setActiveDevice(deviceProtocol.devices[0].id)
+
+    const apiConfigService = new APIConfigService(deviceProtocol)
+
+    const result = await apiConfigService.getAPIConfig()
+
+    expect(result.ok).toBeTruthy()
+  })
+})
diff --git a/libs/api-devices-testing/src/lib/connection.spec.tsx b/libs/api-devices-testing/src/lib/connection.spec.tsx
new file mode 100644
index 000000000..ad852ae6c
--- /dev/null
+++ b/libs/api-devices-testing/src/lib/connection.spec.tsx
@@ -0,0 +1,49 @@
+/**
+ * Copyright (c) Mudita sp. z o.o. All rights reserved.
+ * For licensing, see https://github.com/mudita/mudita-center/blob/master/LICENSE.md
+ */
+
+import {
+  DeviceProtocol,
+  DeviceResolverService,
+  SerialPortService,
+} from "device-protocol/feature"
+import { EventEmitter } from "events"
+
+jest.mock("shared/utils", () => {
+  return { callRenderer: () => {} }
+})
+jest.mock("Core/device-manager/services/usb-devices/usb-devices.helper", () => {
+  return { getUsbDevices: () => {} }
+})
+
+describe("Connection", () => {
+  it.each([{ vendorId: "0e8d", productId: "200a" }])(
+    "should connect successfully",
+    async ({ vendorId, productId }) => {
+      const eventEmitter = new EventEmitter()
+
+      const deviceProtocol = new DeviceProtocol(
+        new SerialPortService(),
+        new DeviceResolverService(),
+        eventEmitter
+      )
+      expect(deviceProtocol.devices).toHaveLength(0)
+      const attachedDevice = (await deviceProtocol.getAttachedDevices()).find(
+        (port) => {
+          return port.vendorId === vendorId && port.productId === productId
+        }
+      )
+
+      expect(attachedDevice).toBeTruthy()
+      if (attachedDevice === undefined) {
+        return
+      }
+
+      await deviceProtocol.addDevice(attachedDevice)
+
+      expect(deviceProtocol.devices).toHaveLength(1)
+      await deviceProtocol.activeDevice?.disconnect()
+    }
+  )
+})
diff --git a/libs/api-devices-testing/src/lib/helpers/set-connection.ts b/libs/api-devices-testing/src/lib/helpers/set-connection.ts
new file mode 100644
index 000000000..4e3193f3c
--- /dev/null
+++ b/libs/api-devices-testing/src/lib/helpers/set-connection.ts
@@ -0,0 +1,38 @@
+/**
+ * Copyright (c) Mudita sp. z o.o. All rights reserved.
+ * For licensing, see https://github.com/mudita/mudita-center/blob/master/LICENSE.md
+ */
+
+import {
+  DeviceProtocol,
+  DeviceResolverService,
+  SerialPortService,
+} from "device-protocol/feature"
+import { EventEmitter } from "events"
+
+export const setConnection = async (vendorId: string, productId: string) => {
+  const eventEmitter = new EventEmitter()
+
+  const deviceProtocol = new DeviceProtocol(
+    new SerialPortService(),
+    new DeviceResolverService(),
+    eventEmitter
+  )
+  const attachedDevice = (await deviceProtocol.getAttachedDevices()).find(
+    (port) => {
+      return port.vendorId === vendorId && port.productId === productId
+    }
+  )
+
+  if (attachedDevice === undefined) {
+    return
+  }
+
+  await deviceProtocol.addDevice(attachedDevice)
+
+  return deviceProtocol
+}
+
+export const setKompaktConnection = () => {
+  return setConnection("0e8d", "200a")
+}
diff --git a/libs/api-devices-testing/tsconfig.json b/libs/api-devices-testing/tsconfig.json
new file mode 100644
index 000000000..3c41f10fb
--- /dev/null
+++ b/libs/api-devices-testing/tsconfig.json
@@ -0,0 +1,20 @@
+{
+  "compilerOptions": {
+    "jsx": "react-jsx",
+    "allowJs": false,
+    "esModuleInterop": false,
+    "allowSyntheticDefaultImports": true,
+    "strict": true
+  },
+  "files": [],
+  "include": [],
+  "references": [
+    {
+      "path": "./tsconfig.lib.json"
+    },
+    {
+      "path": "./tsconfig.spec.json"
+    }
+  ],
+  "extends": "../../tsconfig.base.json"
+}
diff --git a/libs/api-devices-testing/tsconfig.lib.json b/libs/api-devices-testing/tsconfig.lib.json
new file mode 100644
index 000000000..cfc484329
--- /dev/null
+++ b/libs/api-devices-testing/tsconfig.lib.json
@@ -0,0 +1,24 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../../dist/out-tsc",
+    "types": [
+      "node",
+
+      "@nx/react/typings/cssmodule.d.ts",
+      "@nx/react/typings/image.d.ts"
+    ]
+  },
+  "exclude": [
+    "jest.config.ts",
+    "src/**/*.spec.ts",
+    "src/**/*.test.ts",
+    "src/**/*.spec.tsx",
+    "src/**/*.test.tsx",
+    "src/**/*.spec.js",
+    "src/**/*.test.js",
+    "src/**/*.spec.jsx",
+    "src/**/*.test.jsx"
+  ],
+  "include": ["src/**/*.js", "src/**/*.jsx", "src/**/*.ts", "src/**/*.tsx"]
+}
diff --git a/libs/api-devices-testing/tsconfig.spec.json b/libs/api-devices-testing/tsconfig.spec.json
new file mode 100644
index 000000000..26ef046ac
--- /dev/null
+++ b/libs/api-devices-testing/tsconfig.spec.json
@@ -0,0 +1,20 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../../dist/out-tsc",
+    "module": "commonjs",
+    "types": ["jest", "node"]
+  },
+  "include": [
+    "jest.config.ts",
+    "src/**/*.test.ts",
+    "src/**/*.spec.ts",
+    "src/**/*.test.tsx",
+    "src/**/*.spec.tsx",
+    "src/**/*.test.js",
+    "src/**/*.spec.js",
+    "src/**/*.test.jsx",
+    "src/**/*.spec.jsx",
+    "src/**/*.d.ts"
+  ]
+}
diff --git a/libs/core/device/modules/base-device.ts b/libs/core/device/modules/base-device.ts
index f96532fd3..29b743cab 100644
--- a/libs/core/device/modules/base-device.ts
+++ b/libs/core/device/modules/base-device.ts
@@ -41,6 +41,10 @@ export abstract class BaseDevice {
 
   abstract connect(): Promise<ResultObject<undefined>>
 
+  public disconnect(): Promise<unknown> {
+    return Promise.resolve()
+  }
+
   abstract request(config: unknown): Promise<unknown>
 
   private generateDeviceIdBySerialNumber = (
diff --git a/libs/core/device/modules/base.adapter.ts b/libs/core/device/modules/base.adapter.ts
index 88c54471e..94429ffdb 100644
--- a/libs/core/device/modules/base.adapter.ts
+++ b/libs/core/device/modules/base.adapter.ts
@@ -34,6 +34,7 @@ export abstract class BaseAdapter<
     return new Promise((resolve) => {
       const serialPort = new SerialPort(this.path, (error) => {
         if (error) {
+          console.error(error)
           resolve(
             Result.failed(
               new AppError(DeviceError.Initialization, error.message)
diff --git a/libs/device-protocol/feature/src/services/device-protocol.ts b/libs/device-protocol/feature/src/services/device-protocol.ts
index 762904338..f7db404ca 100644
--- a/libs/device-protocol/feature/src/services/device-protocol.ts
+++ b/libs/device-protocol/feature/src/services/device-protocol.ts
@@ -106,7 +106,6 @@ export class DeviceProtocol {
   }
 
   public async addDevice(port: PortInfo): Promise<void> {
-    console.log("===== addDevice =====")
     await this.mutex.runExclusive(async () => {
       await this.addDeviceTask(port)
     })
diff --git a/libs/device/adapters/src/lib/serial-port-api-device.ts b/libs/device/adapters/src/lib/serial-port-api-device.ts
index 1af4e052b..9375c0de2 100644
--- a/libs/device/adapters/src/lib/serial-port-api-device.ts
+++ b/libs/device/adapters/src/lib/serial-port-api-device.ts
@@ -44,6 +44,7 @@ export class SerialPortDeviceAPIAdapter {
     return new Promise((resolve) => {
       const serialPort = new SerialPort(this.path, (error) => {
         if (error) {
+          console.error(error)
           resolve(
             Result.failed(
               new AppError(DeviceError.Initialization, error.message)
@@ -58,6 +59,17 @@ export class SerialPortDeviceAPIAdapter {
     })
   }
 
+  public closeConnection() {
+    return new Promise((resolve) => {
+      if (this.serialPort) {
+        this.serialPort.close((error) => {
+          resolve(undefined)
+        })
+      }
+      resolve(undefined)
+    })
+  }
+
   public async request(config: APIRequestData) {
     if (this.serialPort === undefined) {
       return Result.failed(
@@ -222,7 +234,6 @@ export class SerialPortDeviceAPIAdapter {
         )
       }
     })
-
     this.serialPort.on("close", () => {
       callRenderer(
         ApiSerialPortToRendererEvents.Closed,
diff --git a/libs/device/feature/src/lib/api-device.ts b/libs/device/feature/src/lib/api-device.ts
index 3d95738c8..2b46e3014 100644
--- a/libs/device/feature/src/lib/api-device.ts
+++ b/libs/device/feature/src/lib/api-device.ts
@@ -30,6 +30,10 @@ export class APIDevice extends BaseDevice {
     return this.adapter.connect()
   }
 
+  override disconnect() {
+    return this.adapter.closeConnection()
+  }
+
   public request<R, T extends APIEndpointType>(
     config: APIRequestWithPayload<T>
   ) {
diff --git a/nx.json b/nx.json
index 426779638..ebe2de2c4 100644
--- a/nx.json
+++ b/nx.json
@@ -1,4 +1,9 @@
 {
+  "pluginsConfig": {
+    "@nx/js": {
+      "analyzeSourceFiles": true
+    }
+  },
   "extends": "nx/presets/npm.json",
   "$schema": "./node_modules/nx/schemas/nx-schema.json",
   "tasksRunnerOptions": {
@@ -39,10 +44,5 @@
         }
       }
     }
-  },
-  "pluginsConfig": {
-    "@nx/js": {
-      "analyzeSourceFiles": true
-    }
   }
 }
diff --git a/package.json b/package.json
index d8b8c1a80..bfb5cea90 100644
--- a/package.json
+++ b/package.json
@@ -21,7 +21,7 @@
     "app:translations:sync": "nx translations:sync mudita-center",
     "test": "npm run test:nx && npm run test:core",
     "test:core": "cross-env TZ=UTC jest --config=jest/jest.config.js",
-    "test:nx": "nx run-many --target=test",
+    "test:nx": "nx run-many --target=test --exclude api-devices-testing",
     "lint": "npm run lint:js && npm run lint:css",
     "lint:css": "cross-env stylelint '{libs,apps/mudita-center/src}/**/*.{ts,tsx}'",
     "lint:fix": "npm run lint:js -- --fix",
@@ -37,7 +37,8 @@
     "e2e:test:cicd:standalone": "xvfb-run --auto-servernum --server-args='-screen 0 1024x768x24' nx e2e:test:cicd:standalone mudita-center-e2e",
     "e2e:test:cicd:mock": "xvfb-run --auto-servernum --server-args='-screen 0 1024x768x24' nx e2e:test:cicd:mock mudita-center-e2e",
     "test-file:generate-and-push": "ts-node scripts/manage-test-files/generate-and-push-test-files.ts",
-    "test-file:clear": "ts-node scripts/manage-test-files/clear-test-files.ts"
+    "test-file:clear": "ts-node scripts/manage-test-files/clear-test-files.ts",
+    "api-device-testing": "npx nx run api-devices-testing:test"
   },
   "repository": {
     "type": "git",
diff --git a/tsconfig.base.json b/tsconfig.base.json
index 735a100be..bcf62d5c5 100644
--- a/tsconfig.base.json
+++ b/tsconfig.base.json
@@ -34,6 +34,7 @@
       "active-device-registry/models": [
         "libs/active-device-registry/models/src/index.ts"
       ],
+      "api-devices-testing": ["libs/api-devices-testing/src/index.ts"],
       "core-device/feature": ["libs/core-device/feature/src/index.ts"],
       "core-device/models": ["libs/core-device/models/src/index.ts"],
       "device-manager/feature": ["libs/device-manager/feature/src/index.ts"],