| TH-D74A/E Virtual COM Port Driver | September 16, 2016 |
CDC driver is also known as MTK VCOM USB driver and is very small in size. We’ve provided direct Android CDC drivers download links for your Windows 32 bit and 64 bit PC. The file is compressed so you’ll need decompressing software like WinRar or 7zip to extract it. Download latest CDC, VCOM, USB & Smartwatch drivers for Mediatek Android devices below. These drivers are for Windows PCs. Download Mediatek VCOM, CDC, USB Serial & Smartwatch Drivers. Auto Mediatek USB VCOM Drivers Signed (all MT. devices) Login / Register to download free Manual Mediatek USB VCOM Drivers Signed (all MT. devices). The Zebra CDC driver conforms to the Microsoft Windows Driver Model (WDM) and is certified by Windows Hardware Quality Labs (WHQL) for installation on 32 and 64bit Windows 7 and Windows 8.1 PCs when a Zebra Scanner must be used in USB CDC host mode. The CDC-ACM driver will no longer recognize the interface and bind to it. Just for completeness, if you could make changes to the desktop then you can either blacklist the usb-serial driver entirely in /etc/modprobe.d/blacklist or you could write a udev rule which runs for that device in particular (recognized be either bus path or vendor.
Introduction
Thank you for choosing the KENWOOD transceiver. You can connect your TH-D74A/E to a PC via a Micro-USB cable, and then utilize the Frequency Control Program or Memory Control Program we have provided.
After reading through the following explanations, feel free to download and install the software.
Operating Environment
1. Operating System (OS)
Windows® 7 (32-bit or 64-bit)
Windows® 8.1 (32-bit or 64-bit)
Windows® 10 (32-bit or 64-bit)
2. Peripheral Devices
USB 2.0 interface.
Installing the virtual COM port driver
ATTENTION: Do not connect the device to a PC before installing the virtual COM port driver.
1. Extract the downloaded file 'USB_CDC_Driver_TH-D74_V100.zip' into a designated folder. In the designated folder, a folder labeled 'USB_CDC_Driver_TH-D74_V100' will be created.
In the folder labeled 'USB_CDC_Driver_TH-D74_V100', double click the 'dpinst.exe' in the folder 'x86' with 32-bit OS, or the 'dpinst.exe' in the folder 'x64' with 64-bit OS.
After a few moments, the following window is displayed.
Click [Next>].
2. The following window is displayed, and the driver installation will begin.
Wait until the installation is completed.
3. After a few moments, the following window is displayed.
Click [Finish] to complete installation and exit.
Connecting the device to a PC
Turn the transceiver power ON, then connect it to a PC via a Micro-USB cable for the transceiver. The PC will detect new hardware.
The installation of the device driver software will start automatically.
If a reboot request appears, please reboot the PC.
Confirming the COM port number
Open the 'Device Manager' to confirm which COM port number is assigned for connection with the TH-D74A/E.
(Confirm the COM port number after turning on the transceiver and connecting the transceiver to the PC using a Micro-USB cable.)
For Windows® 7
1. Click the Windows® [Start] button.
2. Right-click [Computer], then click [Properties].
3. Click [Device Manager] in the displayed window.
4. [Device Manager] window will appear.
For Windows® 8.1 and Windows® 10
1. Right-click the Windows® [Start] button.
2. Click [Device Manager] in the displayed window.
3. [Device Manager] window will appear.
Click 'Ports (COM & LPT)' to extend it, then you can find 'TH-D74 (COMxx)'. The 'COMxx' number is different depending on your PC.
In the above example, 'TH-D74 (COM3)' is listed. This means that COM3 is assigned for the connection with the TH-D74A/E.
Select this port number in the configurations for communication in the software you are using.
If you agree with the details listed above, click the following link to download the virtual COM port driver installation program.
Update History
First Release (September 16, 2016)
Windows®, and Windows logo are registered trademarks of Microsoft Corporation in the United States and/or other countries.
-->Important
This topic is for programmers. If you are a customer experiencing USB problems, see Troubleshoot common USB problems
This topic lists the Microsoft-provided drivers for the supported USB device classes. Avid 1394 driver download.
- Microsoft-provided drivers for USB-IF approved device classes.
- For composite devices, use USB Generic Parent Driver (Usbccgp.sys) that creates physical device objects (PDOs) for each function.
- For non-composite devices or a function of a composite device, use WinUSB (Winusb.sys).
If you are installing USB drivers: You do not need to download USB device class drivers. They are installed automatically. These drivers and their installation files are included in Windows. They are available in the WindowsSystem32DriverStoreFileRepository folder. The drivers are updated through Windows Update.
If you are writing a custom driver: Before writing a driver for your USB device, determine whether a Microsoft-provided driver meets the device requirements. If a Microsoft-provided driver is not available for the USB device class to which your device belongs, then consider using generic drivers, Winusb.sys or Usbccgp.sys. Write a driver only when necessary. More guidelines are included in Choosing a driver model for developing a USB client driver.
USB Device classes
USB Device classes are categories of devices with similar characteristics and that perform common functions. Those classes and their specifications are defined by the USB-IF. Each device class is identified by USB-IF approved class, subclass, and protocol codes, all of which are provided by the IHV in device descriptors in the firmware. Microsoft provides in-box drivers for several of those device classes, called USB device class drivers. If a device that belongs to a supported device class is connected to a system, Windows automatically loads the class driver, and the device functions with no additional driver required.
Hardware vendors should not write drivers for the supported device classes. Windows class drivers might not support all of the features that are described in a class specification. If some of the device's capabilities are not implemented by the class driver, vendors should provide supplementary drivers that work in conjunction with the class driver to support the entire range of functionality provided by the device.
Usb Cdc Driver Windows 10
For general information about USB-IF approved device classes see the USB Common Class Specification
The current list of USB class specifications and class codes is documented in the USB-IF Defined Class Code List.
Device setup classes
Windows categorizes devices by device setup classes, which indicate the functionality of the device.
Microsoft defines setup classes for most devices. IHVs and OEMs can define new device setup classes, but only if none of the existing classes apply. For more information, see System-Defined Device Setup Classes.
Two important device setup classes for USB devices are as follows:
USBDevice {88BAE032-5A81-49f0-BC3D-A4FF138216D6}: IHVs must use this class for custom devices that do not belong to another class. This class is not used for USB host controllers and hubs.
USB {36fc9e60-c465-11cf-8056-444553540000}: IHVs must not use this class for their custom devices. This is reserved for USB host controllers and USB hubs.
The device setup classes are different from USB device classes discussed earlier. For example, an audio device has a USB device class code of 01h in its descriptor. When connected to a system, Windows loads the Microsoft-provided class driver, Usbaudio.sys. In Device Manager, the device is shown under is Sound, video and game controllers, which indicates that the device setup class is Media.
Microsoft-provided USB device class drivers
| USB-IF class code | Device setup class | Microsoft-provided driver and INF | Windows support | Description |
|---|---|---|---|---|
| Audio (01h) | Media {4d36e96c-e325-11ce-bfc1-08002be10318} | Usbaudio.sys Wdma_usb.inf | Windows 10 for desktop editions (Home, Pro, Enterprise, and Education) Windows 10 Mobile Windows 8.1 Windows 8 Windows 7 Windows Server 2008 Windows Vista | Microsoft provides support for the USB audio device class by means of the Usbaudio.sys driver. For more information, see 'USBAudio Class System Driver' in Kernel-Mode WDM Audio Components. For more information about Windows audio support, see the Audio Device Technologies for Windows website. |
| Communications and CDC Control (02h) | ||||
| Ports {4D36E978-E325-11CE-BFC1-08002BE10318} | Usbser.sys Usbser.inf | Windows 10 for desktop editions Windows 10 Mobile | In Windows 10, a new INF, Usbser.inf, has been added that loads Usbser.sys automatically as the function driver. For more information, see USB serial driver (Usbser.sys)
| |
| Modem {4D36E96D-E325-11CE-BFC1-08002BE10318} Note Supports Subclass 02h (ACM) | Usbser.sys Custom INF that references mdmcpq.inf | Windows 10 for desktop editions Windows 8.1 Windows 8 Windows 7 Windows Server 2008 Windows Vista | In Windows 8.1 and earlier versions, Usbser.sys is not automatically loaded. To load the driver, you need to write an INF that references the modem INF (mdmcpq.inf) and includes [Install] and [Needs] sections. Starting with Windows Vista, you can enable CDC and Wireless Mobile CDC (WMCDC) support by setting a registry value, as described in Support for the Wireless Mobile Communication Device Class. When CDC support is enabled, the USB Common Class Generic Parent Driver enumerates interface collections that correspond to CDC and WMCDC Control Models, and assigns physical device objects (PDO) to these collections. | |
| Net {4d36e972-e325-11ce-bfc1-08002be10318} Note Supports Subclass 0Eh (MBIM) | wmbclass.sys Netwmbclass.inf | Windows 10 for desktop editions Windows 8.1 Windows 8 | Starting in Windows 8, Microsoft provides the wmbclass.sys driver, for mobile broadband devices. See, MB Interface Model. | |
| HID (Human Interface Device) (03h) | HIDClass {745a17a0-74d3-11d0-b6fe-00a0c90f57da} | Hidclass.sys Hidusb.sys Input.inf | Windows 10 for desktop editions Windows 10 Mobile Windows 8.1 Windows 8 Windows 7 Windows Server 2008 Windows Vista | Microsoft provides the HID class driver (Hidclass.sys) and the miniclass driver (Hidusb.sys) to operate devices that comply with the USB HID Standard. For more information, see HID Architecture and Minidrivers and the HID class driver. For further information about Windows support for input hardware, see the Input and HID - Architecture and Driver Support website. |
| Physical (05h) | - | - | - | Recommended driver: WinUSB (Winusb.sys) |
| Image (06h) | Image {6bdd1fc6-810f-11d0-bec7-08002be2092f} | Usbscan.sys Sti.inf | Windows 10 for desktop editions Windows 8.1 Windows 8 Windows 7 Windows Server 2008 Windows Vista | Microsoft provides the Usbscan.sys driver that manages USB digital cameras and scanners for Windows XP and later operating systems. This driver implements the USB component of the Windows Imaging Architecture (WIA). For more information about WIA, see Windows Image Acquisition Drivers and the Windows Imaging Component website. For a description of the role that Usbscan.sys plays in the WIA, see WIA Core Components. |
| Printer (07h) | USB Drivers yamaha mobile phones & portable devices. Note Usbprint.sys enumerates printer devices under the device set up class: Printer {4d36e979-e325-11ce-bfc1-08002be10318}. | Usbprint.sys Usbprint.inf | Windows 10 for desktop editions Windows 8.1 Windows 8 Windows 7 Windows Server 2008 Windows Vista | Microsoft provides the Usbprint.sys class driver that manages USB printers. For information about implementation of the printer class in Windows, see the Printing - Architecture and Driver Support website. |
| Mass Storage (08h) | ||||
| USB | Usbstor.sys | Windows 10 for desktop editions Windows 10 Mobile Windows 8.1 Windows 8 Windows 7 Windows Server 2008 Windows Vista | Microsoft provides the Usbstor.sys port driver to manage USB mass storage devices with Microsoft's native storage class drivers. For an example device stack that is managed by this driver, see Device Object Example for a USB Mass Storage Device. For information about Windows storage support, see the Storage Technologies website. | |
| SCSIAdapter {4d36e97b-e325-11ce-bfc1-08002be10318} | SubClass (06) and Protocol (62) Uaspstor.sys Uaspstor.inf | Windows 10 for desktop editions Windows 10 Mobile Windows 8.1 Windows 8 | Uaspstor.sys is the class driver for SuperSpeed USB devices that support bulk stream endpoints. For more information see: | |
| Hub (09h) | USB {36fc9e60-c465-11cf-8056-444553540000} | |||
| Usbhub.sys Usb.inf | Windows 10 for desktop editions Windows 10 Mobile Windows 8.1 Windows 8 Windows 7 Windows Server 2008 Windows Vista | Microsoft provides the Usbhub.sys driver for managing USB hubs. For more information about the relationship between the hub class driver and the USB stack, see USB host-side drivers in Windows. | ||
| Usbhub3.sys Usbhub3.inf | Windows 10 for desktop editions Windows 8.1 Windows 8 | Microsoft provides the Usbhub3.sys driver for managing SuperSpeed (USB 3.0) USB hubs. The driver is loaded when a SuperSpeed hub is attached to an xHCI controller. See USB host-side drivers in Windows. | ||
| CDC-Data (0Ah) | - | - | - | Recommended driver: WinUSB (Winusb.sys) |
| Smart Card (0Bh) | SmartCardReader {50dd5230-ba8a-11d1-bf5d-0000f805f530} | |||
| Usbccid.sys (Obsolete) | Windows 10 for desktop editions Windows 7 Windows Server 2008 Windows Vista | Microsoft provides the Usbccid.sys mini-class driver to manage USB smart card readers. For more information about smart card drivers in Windows, see Smart Card Design Guide. Note that for Windows Server 2003, Windows XP, and Windows 2000, special instructions are required for loading this driver because it might have been released later than the operating system. Note Usbccid.sys driver has been replaced by UMDF driver, WUDFUsbccidDriver.dll. | ||
| WUDFUsbccidDriver.dll WUDFUsbccidDriver.inf | Windows 8.1 Windows 8 | WUDFUsbccidDriver.dll is a user-mode driver for USB CCID Smart Card Reader devices. | ||
| Content Security (0Dh) | - | - | - | Recommended driver: USB Generic Parent Driver (Usbccgp.sys). Some content security functionality is implemented in Usbccgp.sys. See Content Security Features in Usbccgp.sys. |
| Video (0Eh) | Image {6bdd1fc6-810f-11d0-bec7-08002be2092f} | Usbvideo.sys Usbvideo.inf | Windows 10 for desktop editions Windows Vista | Microsoft provides USB video class support by means of the Usbvideo.sys driver. For more information, see 'USB Video Class Driver' under AVStream Minidrivers. Note that for Windows XP, special instructions are required for loading this driver because it might have been released later than the operating system. |
| Personal Healthcare (0Fh) | - | - | - | Recommended driver: WinUSB (Winusb.sys) |
| Audio/Video Devices (10h) | - | - | - | - |
| Diagnostic Device (DCh) | - | - | - | Recommended driver: WinUSB (Winusb.sys) |
| Wireless Controller (E0h) Note Supports Subclass 01h and Protocol 01h | Bluetooth {e0cbf06c-cd8b-4647-bb8a-263b43f0f974} | Bthusb.sys Bth.inf | Windows 10 for desktop editions Windows 10 Mobile Windows 8.1 Windows 8 Windows 7 Windows Vista | Microsoft provides the Bthusb.sys miniport driver to manage USB Bluetooth radios. For more information, see Bluetooth Design Guide. |
| Miscellaneous (EFh) | Net {4d36e972-e325-11ce-bfc1-08002be10318} Note Supports SubClass 04h and Protocol 01h | Rndismp.sys Rndismp.inf | Windows 10 for desktop editions Windows 8.1 Windows 8 Windows 7 Windows Vista | Prior to Windows Vista, support for CDC is limited to the RNDIS-specific implementation of the Abstract Control Model (ACM) with a vendor-unique protocol (bInterfaceProtocol) value of 0xFF. The RNDIS facility centers the management of all 802-style network cards in a single class driver, Rndismp.sys. For a detailed discussion of remote NDIS, see Overview of Remote NDIS. The mapping of remote NDIS to USB is implemented in the Usb8023.sys driver. For further information about networking support in Windows, see the Networking and Wireless Technologies website. |
| Application Specific (FEh) | - | - | - | Recommended driver: WinUSB (Winusb.sys) |
| Vendor Specific (FFh) | - | - | Windows 10 for desktop editions Windows 10 Mobile | Recommended driver: WinUSB (Winusb.sys) |
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