When a pen drive, also known as a USB stick or USB flash drive, is physically connected to a computer running Windows 11 or 10, the drive is not being recognized or displayed in the File Explorer interface. When the pen drive is not showing in computer, it means that the operating system is unable to detect the presence of the pen drive or display it as a visible storage device. This can be a frustrating issue as it prevents you from accessing files stored on the drive or performing any actions related to it, such as copying, moving, or deleting files. There are several indicators that your pen drive is suffering from the not showing / detected issue, for example: