Honeywell IMPACT IHR810 User Manual page 28

3. If the dialog box pops up during the installation, please select "Install this driver software anyway" and go on installation,
as shown below:
4. The driver is installing
5. Click "Finish", the installation of the driver is complete, the COM port pops up automatically in the port of device manager.
As you use port, please select auto-generated COM port.
Prompts: If the installation failed, firstly copy "usbser.sys" file in Favorites of the Virtual COM driver of ST to Disk C of the
computer, and install it once more. The specific operation sees the installation method for NXP chip above
mentioned:
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IHR810 User Manual
26.