China DOS Union

Previously, everyone used devcon find to obtain the Hardware ID and filtered by for + find to disable or enable devices. However, their names are not fixed and have no pattern, so any code is not relatively universal. I have always been puzzled by the USB device standard. With the spirit of not giving up until the goal is achieved, I started to seek the rules of USB devices in Windows and the USB device standard. I opened the Registry Editor and started from the hardware-related key values to find their similarities and rules. Finally, I located HKLM\SYSTEM\CurrentControlSet\Enum\USB. By comparing one by one, I found that USB\Class_XX&SubClass_XX has a certain pattern. Then I invited Google experts for help. I saw some relevant standards on the Microsoft website with the keyword CompatibleIDs (Microsoft standards are not all standards). Hehe, it seems there is hope! ^_^ Continue with the keyword USB Class, haha OK!!www.usb.org It's standard enough! Well, enough small talk, start sharing my hard work; -)

Classification standards of each device
00　Use class information in the Interface Descriptors
01　Audio
02　Communications and CDC Control
03　HID (Human Interface Device)
05　Physical
06　Image
07　Printer
08　Mass Storage
09　Hub
0A　CDC-Data
0B　Smart Card
0D　Content Security
0E　Video
0F　Personal Healthcare
DC　Diagnostic Device
E0　Wireless Controller
EF　Miscellaneous
FE　Application Specific
FF　Vendor Specific

Not translating the above due to poor English

Method to disable a device: devcon.exe disable USB\Class_XX
Method to enable a device: devcon.exe enable USB\Class_XX （where XX is the serial number in the green part above）
Example:
devcon.exe disable USB\Class_08
Disable USB flash drives, that is, delete USB flash drives, no matter how many USB flash drives you have, all delete together
devcon.exe disable USB\Class_06
Disable digital cameras, including the removable disks attached to digital cameras
devcon.exe disable USB\Class_03
Disable USB mice & keyboards
devcon.exe disable USB\Class_ff
Disable cameras, see you still show off; -)
Disabling & enabling USB devices is so simple

Related tools DevCon.exe Microsoft command-line utility can replace Device Manager
Related links:
http://www.microsoft.com/whdc/device/input/HID_HWID.mspx
http://www.usb.org/developers/defined_class/
http://www.cn-dos.net/forum/viewthread.php?tid=35139&fpage=1

Finally, I also hope everyone can collect other USB\Class_XX serial numbers (post replies)
Batch code to query the USB\Class_XX serial number of known or previously installed devices is as follows

@echo off

for /f "delims=*" %%a in ('reg query "HKLM\SYSTEM\CurrentControlSet\Enum\USB"^|find /i "Vid_"' do (

    for /f "skip=4 delims=" %%b in ('reg query "%%a"' do (

        for /f "skip=4 tokens=3" %%i in ('reg query "%%b" /v CompatibleIDs' do (

            for /f "skip=4 tokens=1,2,*" %%a in ('reg query "%%b" /v DeviceDesc' do (

                for /f "delims=&" %%j in ("%%i" do echo "%%j"   Device name: %%c 

))))

echo.&echo If you want to query USB\Class_XX classification below, change the "delims=&" of the 5th for to "delims=*"

pause

Back up drivers using pure DevCon script, compatible with Driver Genius (2008-01-17)

[ Last edited by fastslz on 2009-9-13 at 05:19 ]

devcon.exe disable USB\Class_03
Disable USB mice & keyboards

This works well in some places ^_^

Still, fastslz is powerful. I've been looking for this material for a long time too, but unfortunately I couldn't find it all..

The notebook considers some devices as USB flash drives.

Originally posted by vkill at 2008-1-16 11:51:
Some devices on the laptop are considered as USB drives.

It is estimated that some laptops connect the device to the USB expansion port of the motherboard.
Then you can take a look at the SubClass_XX pattern. Here, only the USB mouse cannot test SubClass_XX. If both the USB mouse and keyboard are USB\Class_03, the SubClass_XX serial number may be different. Some friends can take a look. Change "delims=&" in the code on the first floor to "delims=" to see it.
Hey~ The bug of Microsoft reg query is really disgusting.

Learning code, but also learning spirit.

Wow, it's great, very comprehensive. Thanks

It doesn't work on ASUS motherboard, VIMICRO USB PC Camera (ZC0301PLH). Disabled successfully, but the camera can still be used.

"devcon" command has such powerful functions?
Hehe, thanks "fastslz" for providing!
Such a good post, can't help but top it!

I want to systematically learn about USB - related things, especially the management of USB devices by the operating system.

May I ask the original poster, what is DEVCON modifying to achieve disabling a device?

Why after using DEVCON to disable a device: devcon.exe disable USB\Class_08

After restarting the system, it can be used again. Oh my

How to disable a device without using DEVCON? For example, modifying the registry and so on.

In addition to DEVCON to disable devices, there is also wmic, and the registry is more complicated (and not necessarily successful)
Of course, you can completely disable USB devices from the registry
Keyword "completely disable USB devices" google

Thanks, share.
Learned