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Important
This topic is for programmers. If you are a customer experiencing USB problems, see Troubleshoot common USB problems
- Windows XP 32bit JUMP TO DOWNLOAD Some later versions of Windows 10, Windows 2019 Server may provide drivers either preinstalled or on the Windows installation media in a 3rd party directory.
- Download OCZ 10xx SCSI Controller Driver 1.3.9.4567 for Windows 8 64-bit (Other Drivers & Tools).
This topic lists the Microsoft-provided drivers for the supported USB device classes.
- 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.
The package provides the installation files for OCZ 10xx SCSI Controller Driver version 2.0.0.4794. In order to manually update your driver, follow the steps below (the next steps): 1.
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
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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. Download amcc 3ware 9690sa sas sata raid manager drivers. | |
| 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 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) |
Related topics
Owners of SCSI scanners often face problems after having migrated their systems to Windows 7 64 bit or Windows 8 64 bit. While Vuescan does support most SCSI scanners on these operating systems a suitable driver to keep using the required SCSI host adapter is often missing.
Neither Microsoft nor Adaptec officially offer such a driver for download. Only more modern Ultra160 SCSI controllers received official drivers for 64 bit Windows. Cables to adapt scanners to such controllers tend to be expensive and even after successfully connecting a scanner it often would not work properly in our tests.
The missing driver that allows you to keep using the proven and nowadays cheap to obtain SCSI host adapters like the various versions of Adaptec's AHA-2940 does exist for both Windows 7 64 bit and Windows 8 64 bit though. In the following we will show you how to get your scanner operational again while keeping its original SCSI controller card.
Scsi-controller Drivers Download For Windows 10 8.1 7 Vista Xp 64-bit
Please note that you are using this information at your own risk and that we can't provide support for this. 920sh drivers download for windows 10 8.1 7 vista xp 64-bit. Of course that doesn't mean we'll not answer questions or are not interested in any problems you might encounter.
Besides allowing you to use Vuescan the same method might also allow you to use the manufacturer's original scanner software. That should at least have been compatible with Windows Vista though because otherwise chances are that it won't even be possible install it anymore. Vuescan does include the required drivers for the scanner itself so that its recognition by the system should work without problems.
Our modified driver supports Adaptec's SCSI controller series AHA-29xx, AHA-39xx and AVA-29xx
| Adaptec AHA-2910C/2915C/2920C/2930C | (SUCCESSFULLY TESTED) |
| Adaptec AHA-2930CU | (SUCCESSFULLY TESTED) |
| Adaptec AHA-2940/2940W | (SUCCESSFULLY TESTED) |
| Adaptec AHA-2940AU | (SUCCESSFULLY TESTED) |
| Adaptec AHA-2940U/UW | (SUCCESSFULLY TESTED) |
| Adaptec AHA-2940U/UW/D | (SUCCESSFULLY TESTED) |
| Adaptec AHA-3940U/UW/UWD | (Detection not tested yet) |
| Adaptec AHA-3940U/UW | (Detection not tested yet) |
| Adaptec AHA-2944UW | (Detection not tested yet) |
| Adaptec AHA-3944U/UWD | (Detection not tested yet) |
| Adaptec AHA-4944UW | (Detection not tested yet) |
| Adaptec AHA-2940UW Pro | (SUCCESSFULLY TESTED) |
| Adaptec AHA-2930UW | (Detection not tested yet) |
| Adaptec AHA-294x | (Detection not tested yet) |
| Adaptec AHA-3985 | (Detection not tested yet) |
| Adaptec AHA-2944/2944W | (Detection not tested yet) |
| Adaptec AHA-3944/3944W | (Detection not tested yet) |
| Adaptec AHA-4944W/UW | (Detection not tested yet) |
| Adaptec AHA-3940/3940W | (Detection not tested yet) |
| Adaptec AVA-2902/2904/2906/2910 | (SUCCESSFULLY TESTED) |
| Adaptec AVA-2930 | (Detection not tested yet) |
| Adaptec AHA-2940U2W | (TESTED NOT TO WORK WITH THIS DRIVER) |
It would be appreciated if you would report to us if you were able to use this driver with another controller from our list. Also please let us know should we have missed to include one that uses an AIC-78xx chip as well.
Creating a driver for Adaptec's AHA-2940 SCSI host adapter et al. on Windows 7 64 bit & Windows 8 64 bit
Our base for the SCSI host adapter's driver is the emulated driver for these controllers that shipped with Windows Vista 64. That emulated driver is sufficient to run a scanner because doing such does not require an ASPI layer. Apart from this page's instructions you will require a *.sys file which can be obtained from any Windows Vista 64 bit DVD. That could be a recovery disk for Windows Vista Home 64 bit for example. On the disk you will find an archive file named install.wim from which we will have to extract two files.
In case you have misplaced your Windows Vista disk and require a trustworthy source to obtain this file on-line it can be noted that Microsoft used to sell Windows Vista through its partner store Digital River and that the according install files still reside on Digital River's servers. We found working download links from the official Microsoft partner's servers listed on a web page named HeiDoc.net.
After having located the install.wim file please download and install the universal archiving software 7-Zip. It allows you to open the install.wim file in which you'll find a folder structure. The two files djsvs.sys and djsvs.inf which we require are located in the folder: 1WindowsSystem32DriverStoreFileRepositorydjsvs.inf_6451fbc2 Please create an empty folder anywhere you like on your systems and extract the two required files there. Note that the source must be a Windows Vista 64 bit disk (the djsvs.sys file is 87KB in size). The smaller djsvs.sys file included with Windows Vista's 32 bit versions is not suitable.
We will now modify the driver so that the supported SCSI controller cards will be recognized on Windows 7 and Windows 8. Please open the file 'djsvs.inf' in a text editor of your choice and replace its contents. In order to do so click into the text box below this paragraph, press Ctrl+A and the Ctrl+C to copy the text. After having done this switch to your text editor and inside of it press Ctrl+A followed by Ctrl+V to paste the copied text while replacing the old contents of the file.
Scsi-controller Drivers Download For Windows 10 8.1 7 Vista Xp Installer
Scsi-controller Drivers Download For Windows 10 8.1 7 Vista Xp Iso
Save the file, go to Windows' Control Panel and choose System > Device Manager. When using Windows 8 please follow the instructions at the bottom of this page (which will also let you end up in the Device Manager) before you go on with the instructions below the screen shot.
Scsi-controller Drivers Download For Windows 10 8.1 7 Vista Xp 32-bit
The screen shots for the following instructions were taken on a German copy of Windows 7. Because things will look extremely similar on an English OS we did not take them twice.
On Device Manager's device list look for the 'Other Devices' category where you will find your SCSI host adapter’. The corresponding entry will be named 'SCSI Controller' or something like that. Right click this entry and select 'Update Driver Software'. Next select 'Browse My Computer' and specify the folder you created before. A warning message will be displayed which you will need to disregard - telling the system to go on with the installation. Afterwards your SCSI host adapter should be listed under its correct name , e. g. 'Adaptec AHA-2940/2940W (AIC-7871 PCI SCSI Controller Emulated)'. If a scanner is connected it should now show up in the imaging devices category and a corresponding driver that was installed with Vuescan should get installed automatically. If the driver does not get installed you can always install it manually from your Vuescan folder.
Installing and using unsigned drivers on Windows 8
We don't use our scanners on Windows 8 but user feedback tells us that in order to install the driver created above one needs to start Windows 8 in a special mode first. Getting Windows 8 to boot in that mode involves a series of steps of which we provide screen captures below. The screen captures come from a virtual Windows 8 machine and since FireWire devices can't be passed through to that virtual system we won't show the actual driver installation.
First get the Windows 8 menu to show and click the gear icon at its bottom. On the settings screen click the 'Change PC settings' entry. There choose the General category from the 'PC settings' list and scroll down all the way to the end of that category to reach the 'Advanced startup' entry as shown. There press the 'Restart now' button.
Your system will restart and after a while you'll get to this option screen. On it choose Troubleshoot, then choose 'Advanced options' and finally choose 'Startup Settings' where you'll find yet another Restart button. Press it to reboot to the 'Startup Settings' screen and on it press either 7 or F7 on your keyboard to boot Windows 8 with its driver signature enforcement disabled.
After booting Windows 8 that way choose Search from the Windows 8 menu, enter 'devmgmt.msc' and click on the App found to get to the Device Manager. Now install your driver as detailed above for Windows 7.
With this information you should be able to get the SCSI host adapters AHA-2930CU, AHA-2940/2940W, AHA-2940AU, AHA-2940U/UW, AHA-2940U/UW/D, AHA-3940U/UW/UWD, AHA-3940U/UW, AHA-2944UW, AHA-3944U/UWD, AHA-4944UW, AHA-2940UW Pro, AHA-2930UW, AHA-294x, AHA-3985, AHA-2944/2944W, AHA-3944/3944W, AHA-4944W/UW, AHA-3940/3940W and AVA-2902, AVA-2904, AVA-2906, AVA-2930 operational on Windows 7 64 bit and Windows 8 64 bit even though Microsoft and Adaptec have officially decided not to support them anymore.