Troubleshooting - l-com RS-422 User Manual

USB to RS-422 / RS-485 Adapter

Troubleshooting

1. "Unidentified USB Device" dialog is not displayed when device is
connected for the first time
If the "Unidentified USB Device" dialog is not displayed when the device is connected for the first time, it is
likely that the PDA does not have a USB host capability or that the host is not installed correctly.
Many PDAs require some form of adaptor (USB host cable, presentation pack or Compact Flash USB host
card) to provide the USB host capability that FTDI devices require.
2. "Error installing USB driver ftdi_d2xx.dll" message
The following installation error may be displayed for a number of reasons:
The driver name has been misspelt · The ".dll" file extension may be required for some platforms · The
required driver files are not in the \\Windows directory · The driver file is in the wrong binary format
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