| Debugging Tools for Windows | 
The !ks.enumdrvobj extension displays all KSDEVICE structures associated with a given WDM driver object, and lists the filter types and filters currently instantiated on these devices.
| Windows NT 4.0 | Not available | 
| Windows 2000 | winxp\ks.dll | 
| Windows XP and later | ks.dll | 
Since !ks.enumdrvobj enumerates every device chained off a WDM driver object, it is equivalent to invoking !ks.enumdevobj on every device chained off a given driver.
For more information, see Kernel Streaming Debugging.