Here’s the direct and practical answer:

Click . Windows will scan its cloud database and automatically download the compatible HID-compliant mouse driver.

Downloading files from unverified third-party sources exposes your computer to malware, adware, or spyware bundled inside fake installers.

Because this model number is often printed on the bottom sticker alongside regulatory information, users often search for it specifically when troubleshooting. However, it is part of HP's broader lineup of plug-and-play input devices.

This mobile-focused mouse is built for durability and portability:

Check the box for and select Windows 7 . Check Run this program as an administrator . Click Apply and launch the installer. Step 2: Re-Pairing the Wireless Connection

Setting up or troubleshooting the HP Wireless Optical Mobile Mouse (Model Fha 3412 / WE789AA)

Compatible as a standard USB pointer device. Advanced customization software from HP may have limited availability on macOS.

Look for your mouse. If the driver is missing or corrupt, it may appear with a yellow exclamation mark or as an "Unknown Device." Right-click the device and select . Choose Search automatically for drivers .

: The tiny USB receiver can be stored inside the mouse body during travel to prevent loss.

Are you trying to , or just get it to track properly? Share public link

: If the mouse isn't moving, try moving it closer to the USB receiver (within 30 cm) and ensure no large metal objects are blocking the signal.