How to detect if the player is using mouse and keyboard?(no controller connected)

I’m trying to detect the device the player is using when playing the game. if it is (PS controller, X box Controller, or playing with mouse and keyboard(no controller is connected)…

void Start()
    {
        var gamepad = Gamepad.current;
        if (gamepad == null)
            return;
        if (gamepad is DualShockGamepad)
        {
          
            print("Playstation gamepad");

        }
        else if (gamepad is XInputController)
        {
                   
            print("Xbox gamepad");
        }
          
    }

I was able to detect the controllers, but how can I add a condition for the keyboard/mouse situation? please help.

>Solution :

trying below my code example

using UnityEngine;
using UnityEngine.InputSystem;

public class InputDetection : MonoBehaviour
{
    void Start()
    {
        var gamepad = Gamepad.current;
        if (gamepad != null)
        {
            if (gamepad is DualShockGamepad)
            {
                print("PlayStation gamepad");
            }
            else if (gamepad is XInputController)
            {
                print("Xbox gamepad");
            }
        }
        else if (Keyboard.current != null || Mouse.current != null)
        {
            print("Mouse and keyboard");
        }
    }
}