This means that COM3 is assigned for the connection with the TH-D74A/E. Input mapper. Select this port number in the configurations for communication in the software you are using. If you agree with the details listed above, click the following link to download the virtual COM port driver installation program. 'USBCDCDriverTH-D74V100.zip' 653KB download. This Qualcomm QDLoader Driver helps in detecting the device when it is connected to PC in EDL Mode or Download Mode. This Qualcomm HS-USB Driver package is for 64-bit OS, you can download the 32-bit version of the driver here. If you would like to install the drivers manually, download these Qualcomm Drivers.

Download Passport Usb Interface (com3) Drivers

1. Those fields contain index values that a client driver uses to activate the interface and one of its alternate settings. For activation, the driver sends a select-interface request to the USB driver stack. The driver stack then builds a standard control request (SET INTERFACE) and sends it to the device. Note the bInterfaceClass field.
2. 1) Download a driver (Ex. Prolific usb to rs232) 2) Right click on the setup and choose troubleshoot compatibility or run it as a program that is compatible for earlier version of windows. 3) Install Driver. 4) Restart Computer. I just tried this and it worked but make sure you restart computer.

Download Passport Usb Interface (com3) Driver Windows 10

• Attach the WD My Passport hard drive to your Mac computer.
• Click the magnifying glass icon (Spotlight) and type Disk Utility. Select the Disk Utility program from the search result list.
• The Mac Disk Utility window appears.
• Make sure that the WD My Passport Ultra is selected on the left-hand side panel.
• Click the Erase tab. Select 'ExFAT' from the drop-down list. (Using this format lets you connect this WD drive to a Windows or Mac computer.)Click Erase.
• The 'Untitled' drive should appear on the desktop. If not, click the Finder icon on the dock, and the Untitled drive will be displayed in the 'Devices' section. Rename it and use it just like you would use a USB stick.
• If you need to use this WD My Passport drive on your Mac computer extensively, follow these steps.
• Go to Disk Utility and click the Erase tab. Choose the 'Mac OS' option from the 'Format' drop-down list. Click the Partition tab and click the + icon to partition the drive. Clicking it multiple times creates many partitions.
• Click on - to delete a partition. Click a partition and type the size of the partition in the 'Size' field to set the partition size manually. Type a partition name that you can understand easily. (For example, type photos for the partition where you want to store photos.)
• Set the format type as 'Mac OS(Journaled)' and then, click Apply Partition. Wait until the partition operation is completed. The partitions now appear on the desktop.