USB to RS-422 / RS-485 Adapter
2. The device does not appear in the /dev directory or the text "New Port
Detected" is not displayed in System Preferences-Network
FTDI USBSeria Driver does not support your device ID (VID and PID). Disable the EEPROM so that
the device reverts to its default device ID, then replug. To get support for your device ID built into
FTDI USBSerial Driver, contact FTDI quoting your device ID and a description of your device.
3. The device cannot be accessed even though the device ID is Supported
in FTDI USBSerial Driver
An ownership or permissions problem is preventing the system from making the device accessible.
Check that the driver is owned by root and wheel. The most common symptom is the group for FTDI
USBSerial Driver is not wheel. To change the group, login as root and perform the following script in
a Terminal window (Go > Applications > Utilities > Terminal):
cd /system/library/extensions
chgrp -R wheel FTDIUSBSerialDriver.kext
Reboot for the change to take effect.
4.
How do I open a Terminal window?
A Terminal window can be started by selecting Go > Applications > Utilities > Terminal .The terminal
window is equivalent to a DOS prompt in Windows.
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