Device Manager (the device does not have a driver installed. What do you mean?

First, you can work normally with driver-free (driver-free) hardware;

Second, your driver is not installed correctly, but it doesn't match your hardware. You should also verify your hardware and reinstall the driver.

PS: Device Manager is a management tool that can be used to manage devices on a computer. You can use Device Manager to view and change device properties, update device drivers, configure device settings, and uninstall devices. Device Manager provides a graphical view of the hardware installed on the computer. All devices communicate with Windows through a software called "device driver".

Using Device Manager, you can install and update the drivers of hardware devices, modify the hardware settings of these devices, and solve problems.