They are available in the WindowsSystem32DriverStoreFileRepository folder.
These drivers and their installation files are included in Windows. Microsoft provides drivers for several USB device classes approved by USB-IF.
Microsoft-provided USB device class drivers Windows 7 Usb Serial Driver Winusb.sys can be used as the USB device's function driver instead of implementing a driver. Microsoft provides the Wpdusb.sys driver to manage portable devices that support the Media Transfer Protocol. Starting in Windows 7, Microsoft has replaced the kernel mode component of the Windows Vista USB driver stack (Wpdusb.sys) for Windows Portable Devices (WPD) with the generic Winusb.sys. Microsoft supports USB biometric devices (fingerprint readers) by providing the Windows Biometric Framework. For more information, see USB Generic Parent Driver (Usbccgp.sys). Usbccgp.sys is a parent driver for composite devices that supports multiple functions. Other Microsoft-provided USB drivers Device setup class For more information, see USB connector manager class extension (UcmCx). For more information, see USB device-side drivers in Windows.
Official driver packages will help you to restore your USB Serial Controller D (input devices).-> USB Serial Controller D drivers were collected from official websites of manufacturers and other trusted sources. Usb Serial Controller D Driver Windows Xp Download.