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The following GUID Explorer output comes from selecting our COM1 Port on a Windows Vista system:
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Property Value
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Class Information
Class GUID GUID_DEVCLASS_PORTS
Class GUID Value {4d36e978-e325-11ce-bfc1-08002be10318}
SetupDiClassNameFromGuid Ports
SetupDiGetClassDescription Ports (COM & LPT)
Device Information
Device Name Communications Port (COM1)
SetupDiGetDeviceInstanceId ACPI\PNP0501\1
Device Interfaces
Device Interface
Device Interface GUID GUID_DEVINTERFACE_SERENUM_BUS_ENUMERATOR
Device Interface GUID Value {4d36e978-e325-11ce-bfc1-08002be10318}
Device Interface Path \\?\acpi#pnp0501#1#{4d36e978-e325-11ce-bfc1-08002be10318}
Device Interface
Device Interface GUID GUID_DEVINTERFACE_COMPORT
Device Interface GUID Value {86e0d1e0-8089-11d0-9ce4-08003e301f73}
Device Interface Path \\?\acpi#pnp0501#1#{86e0d1e0-8089-11d0-9ce4-08003e301f73}
Device Registry Properties
SPDRP_ADDRESS (property does not exist for this device)
SPDRP_BUSNUMBER (property does not exist for this device)
SPDRP_BUSTYPEGUID (property does not exist for this device)
SPDRP_CAPABILITIES 00000030h (CM_DEVCAP_UNIQUEID+CM_DEVCAP_SILENTINSTALL)
SPDRP_CHARACTERISTICS (property does not exist for this device)
SPDRP_CLASS Ports
SPDRP_CLASSGUID {4d36e978-e325-11ce-bfc1-08002be10318}
SPDRP_COMPATIBLEIDS (property does not exist for this device)
SPDRP_CONFIGFLAGS 00000000h
SPDRP_DEVICE_POWER_DATA
CM_POWER_DATA
PD_Size 00000038h
PD_MostRecentPowerState 00000004h (PowerDeviceD3)
PD_Capabilities 00000009h (PDCAP_D0_SUPPORTED+PDCAP_D3_SUPPORTED)
PD_D1Latency 00000000h (Device does not support D1 state)
PD_D2Latency 00000000h (Device does not support D2 state)
PD_D3Latency 00000000h (Device does not support D3 state)
PD_PowerStateMapping[PowerSystemUnspecified] 00000000h (PowerDeviceUnspecified)
PD_PowerStateMapping[PowerSystemWorking] 00000001h (PowerDeviceD0)
PD_PowerStateMapping[PowerSystemSleeping1] 00000000h (PowerDeviceUnspecified)
PD_PowerStateMapping[PowerSystemSleeping2] 00000000h (PowerDeviceUnspecified)
PD_PowerStateMapping[PowerSystemSleeping3] 00000004h (PowerDeviceD3)
PD_PowerStateMapping[PowerSystemHibernate] 00000004h (PowerDeviceD3)
PD_PowerStateMapping[PowerSystemShutdown] 00000004h (PowerDeviceD3)
PD_DeepestSystemWake 00000000h (PowerSystemUnspecified)
SPDRP_DEVICEDESC Communications Port
SPDRP_DEVTYPE (property does not exist for this device)
SPDRP_DRIVER {4d36e978-e325-11ce-bfc1-08002be10318}\0000
SPDRP_ENUMERATOR_NAME ACPI
SPDRP_EXCLUSIVE (property does not exist for this device)
SPDRP_FRIENDLYNAME Communications Port (COM1)
SPDRP_HARDWAREID
Hardware ID #1 ACPI\PNP0501
Hardware ID #2 *PNP0501
SPDRP_INSTALL_STATE 00000000h
SPDRP_LEGACYBUSTYPE (property does not exist for this device)
SPDRP_LOCATION_INFORMATION (property does not exist for this device)
SPDRP_LOCATION_PATHS (property does not exist for this device)
SPDRP_LOWERFILTERS (property does not exist for this device)
SPDRP_MFG (Standard port types)
SPDRP_PHYSICAL_DEVICE_OBJECT_NAME \Device\0000005d
SPDRP_REMOVAL_POLICY 00000001h (CM_REMOVAL_POLICY_EXPECT_NO_REMOVAL)
SPDRP_REMOVAL_POLICY_HW_DEFAULT 00000001h (CM_REMOVAL_POLICY_EXPECT_NO_REMOVAL)
SPDRP_REMOVAL_POLICY_OVERRIDE (property does not exist for this device)
SPDRP_SECURITY (property does not exist for this device)
SPDRP_SECURITY_SDS (property does not exist for this device)
SPDRP_SERVICE Serial
File Description Serial Device Driver
File Version 6.0.6000.16386 (vista_rtm.061101-2205) (6.0.6001.18000)
Product Name Microsoft® Windows® Operating System
Product Version 6.0.6000.16386 (6.0.6001.18000)
Company Name Microsoft Corporation
Copyright © Microsoft Corporation. All rights reserved.
File Path c:\windows\system32\drivers\serial.sys
Services Registry Values
DisplayName Serial port driver
ErrorControl SERVICE_ERROR_IGNORE
Group Extended base
ImagePath system32\DRIVERS\serial.sys
Start SERVICE_SYSTEM_START
Tag 14
Type SERVICE_KERNEL_DRIVER
SPDRP_UI_NUMBER (property does not exist for this device)
SPDRP_UI_NUMBER_DESC_FORMAT (property does not exist for this device)
SPDRP_UPPERFILTERS
Upper Filter #1 serenum
File Description Serial Port Enumerator
File Version 6.0.6001.18000 (longhorn_rtm.080118-1840) (6.0.6001.18000)
Product Name Microsoft® Windows® Operating System
Product Version 6.0.6001.18000 (6.0.6001.18000)
Company Name Microsoft Corporation
Copyright © Microsoft Corporation. All rights reserved.
File Path c:\windows\system32\drivers\serenum.sys
Services Registry Values
DisplayName Serenum Filter Driver
ErrorControl SERVICE_ERROR_NORMAL
Group PNP Filter
ImagePath system32\DRIVERS\serenum.sys
Start SERVICE_DEMAND_START
Tag 5
Type SERVICE_KERNEL_DRIVER
Device Drivers
SP_DRVINFO_DATA
DriverType SPDIT_COMPATDRIVER
Description Communications Port
MfgName (Standard port types)
ProviderName Microsoft
DriverDate 06/20/06 16:00:00
DriverVersion 6.0.6001.18000
SP_DRVINFO_DETAIL_DATA
InfDate 01/18/08 19:22:52
CompatIDsOffset 9
CompatIDsLength 10
SectionName ComPort
InfFileName C:\Windows\INF\msports.inf
DrvDescription Communications Port
HardwareID *pnp0500
SP_DRVINFO_DATA
DriverType SPDIT_COMPATDRIVER
Description Communications Port
MfgName (Standard port types)
ProviderName Microsoft
DriverDate 06/20/06 16:00:00
DriverVersion 6.0.6001.18000
SP_DRVINFO_DETAIL_DATA
InfDate 01/18/08 19:22:52
CompatIDsOffset 9
CompatIDsLength 10
SectionName ComPort
InfFileName C:\Windows\INF\msports.inf
DrvDescription Communications Port
HardwareID *pnp0501