Unimarc/Test_Project/Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Management;


namespace Test_Project
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            var usbDevices = GetUSBDevices();

            foreach(var usbDevice in usbDevices)
            {
                string msg = string.Format("Device ID: {0}, PNP Device ID: {1}, Description: {2}\n",
                    usbDevice.DeviceID, usbDevice.PnpDeviceID, usbDevice.Description);
                richTextBox1.Text += msg;
            }
        }

        static List<USBDeviceInfo> GetUSBDevices() 
        {
            List<USBDeviceInfo> devices = new List<USBDeviceInfo>();

            ManagementObjectCollection collection;
            using (var searcher = new ManagementObjectSearcher(@"Select * From Win32_USBHub"))
                collection = searcher.Get();
            
            foreach(var device in collection)
            {
                devices.Add(new USBDeviceInfo(
                    (string)device.GetPropertyValue("DeviceID"),
                    (string)device.GetPropertyValue("PNPDeviceID"),
                    (string)device.GetPropertyValue("Description")
                ));
            }
            collection.Dispose();
            return devices;
        }
    }
    class USBDeviceInfo
    {
        public USBDeviceInfo(string deviceID, string pnpDeviceID, string description)
        {
            this.DeviceID = deviceID;
            this.PnpDeviceID = pnpDeviceID;
            this.Description = description;
        }
        public string DeviceID { get; private set; }
        public string PnpDeviceID { get; private set; }
        public string Description { get; private set; }
    }
}