Where is the Windows ADB Driver for the Pixel C? [closed]

I was able to use the current Google USB drivers, but had to modify the android_winusb.inf to include the PID and VID for the Pixel C. I can now connect the Pixel C to my windows comptuer using either a USB 3 cable or a USB 2 cable (with one end being USB type C).

1. Backup your android_winusb.inf, typically found in C:\Users\%USERNAME%\AppData\Local\Android\android-sdk\extras\google\usb_driver
2. Open android_winusb.inf for Edit
3. Under [Google.NTx86] section, add:

;Google Pixel C     %SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_5203     %CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_5203&MI_01

4. Under [Google.NTamd64] add:

;Google Pixel C%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_5203%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_5203&MI_01

5. Plug in Pixel C to your windows machine
6. Go to your device manager where the "unknown ADB device" is listed. Update the driver, and point it to the location where the driver is installed (where the INF file is).
7. Follow prompts to install driver. I got a notice saying that the drivers were from an unrecognized source. Update: Note, when I try this these days, I don't get a notice about the driver not being signed / recognized, they simply do not work. I had to do "Let me pick from a list of device drivers", select "Show All Devices", and then select one of the android selections, ADB bridge, I believe. Then it should work.

Her'es the full contents of the INF file for reference.

;; Android WinUsb driver installation.;[Version]Signature           = "$Windows NT$"Class               = AndroidUsbDeviceClassClassGuid           = {3F966BD9-FA04-4ec5-991C-D326973B5128}Provider            = %ProviderName%DriverVer           = 08/28/2014,11.0.0000.00000CatalogFile.NTx86   = androidwinusb86.catCatalogFile.NTamd64 = androidwinusba64.cat[ClassInstall32]Addreg = AndroidWinUsbClassReg[AndroidWinUsbClassReg]HKR,,,0,%ClassName%HKR,,Icon,,-1[Manufacturer]%ProviderName% = Google, NTx86, NTamd64[Google.NTx86];Google Pixel C%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_5203%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_5203&MI_01;Google Nexus One%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_0D02%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_0D02&MI_01%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_4E11%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4E12&MI_01;Google Nexus S%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_4E21%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4E22&MI_01%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_4E23%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4E24&MI_01;Google Nexus 7%SingleBootLoaderInterface% = USB_Install, USB\VID_18D1&PID_4E40%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4E42&MI_01%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4E44&MI_01;Google Nexus Q%SingleBootLoaderInterface% = USB_Install, USB\VID_18D1&PID_2C10%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_2C11;Google Nexus (generic)%SingleBootLoaderInterface% = USB_Install, USB\VID_18D1&PID_4EE0%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4EE2&MI_01%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4EE4&MI_02%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4EE6&MI_01%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4EE7;Google Glass%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_9001%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_9001&MI_01;Project Tango (generic)%SingleBootLoaderInterface% = USB_Install, USB\VID_18D1&PID_4D00%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4D02&MI_01%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4D04&MI_02%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4D06&MI_01%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4D07[Google.NTamd64];Google Pixel C%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_5203%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_5203&MI_01;Google Nexus One%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_0D02%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_0D02&MI_01%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_4E11%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4E12&MI_01;Google Nexus S%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_4E21%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4E22&MI_01%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_4E23%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4E24&MI_01;Google Nexus 7%SingleBootLoaderInterface% = USB_Install, USB\VID_18D1&PID_4E40%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4E42&MI_01%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4E44&MI_01;Google Nexus Q%SingleBootLoaderInterface% = USB_Install, USB\VID_18D1&PID_2C10%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_2C11;Google Nexus (generic)%SingleBootLoaderInterface% = USB_Install, USB\VID_18D1&PID_4EE0%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4EE2&MI_01%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4EE4&MI_02%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4EE6&MI_01%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4EE7;Google Glass%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_9001%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_9001&MI_01;Project Tango (generic)%SingleBootLoaderInterface% = USB_Install, USB\VID_18D1&PID_4D00%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4D02&MI_01%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4D04&MI_02%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4D06&MI_01%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_4D07[USB_Install]Include = winusb.infNeeds   = WINUSB.NT[USB_Install.Services]Include     = winusb.infAddService  = WinUSB,0x00000002,WinUSB_ServiceInstall[WinUSB_ServiceInstall]DisplayName     = %WinUSB_SvcDesc%ServiceType     = 1StartType       = 3ErrorControl    = 1ServiceBinary   = %12%\WinUSB.sys[USB_Install.Wdf]KmdfService = WINUSB, WinUSB_Install[WinUSB_Install]KmdfLibraryVersion  = 1.9[USB_Install.HW]AddReg  = Dev_AddReg[Dev_AddReg]HKR,,DeviceInterfaceGUIDs,0x10000,"{F72FE0D4-CBCB-407d-8814-9ED673D0DD6B}"[USB_Install.CoInstallers]AddReg    = CoInstallers_AddRegCopyFiles = CoInstallers_CopyFiles[CoInstallers_AddReg]HKR,,CoInstallers32,0x00010000,"WdfCoInstaller01009.dll,WdfCoInstaller","WinUSBCoInstaller2.dll"[CoInstallers_CopyFiles]WinUSBCoInstaller2.dllWdfCoInstaller01009.dll[DestinationDirs]CoInstallers_CopyFiles=11[SourceDisksNames]1 = %DISK_NAME%,,,\i3862 = %DISK_NAME%,,,\amd64[SourceDisksFiles.x86]WinUSBCoInstaller2.dll  = 1WdfCoInstaller01009.dll = 1[SourceDisksFiles.amd64]WinUSBCoInstaller2.dll  = 2WdfCoInstaller01009.dll = 2[Strings]ProviderName                = "Google, Inc."SingleAdbInterface          = "Android ADB Interface"CompositeAdbInterface       = "Android Composite ADB Interface"SingleBootLoaderInterface   = "Android Bootloader Interface"WinUSB_SvcDesc              = "Android USB Driver"DISK_NAME                   = "Android WinUsb installation disk"ClassName                   = "Android Device"

For some people altering the android_winusb.inf file will not work since some versions of Windows will detect the tampering of the file.In this case, there is a simple solution that worked for me:

1. In Device Manager, right click your device and click "Update Driver"
2. Choose "Browse my computer for driver software"
3. Click "Let me pick from a list of device drivers". WARNING: Do not use the windows automated search. It will not work!
4. Click "Have disk" and browse to your unaltered "android_winusb.inf" file and use that.

Windows will complain that it might not be compatible with your device but you can just ignore that and continue.Done!