Allied Telesis NETEXTREME II AT-2973SX - Manual (Page 96)

Chapter 7: Installing the Windows Drivers
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To perform a silent uninstall from within the installer source folder, enter:
msiexec /x "BDrv5706.msi" /qn
To perform a silent uninstall from any folder, enter:
msiexec /x "{F0DA8A3F-1457-419E-96F4-235DD3EF41E1}" /
qn
Note
The hexidecimal number above may differ from your current
installer. Check the Key name corresponding with the Broadcom
Advanced Control Suite 3 (BACS) application in
HKLM\Software\Mictrosoft\Windows\CurrentVersion\Uninstall for
the correct hexidecimal number.
Performing a Silent Reinstall
To perform a silent reinstall of the same installer, enter:
setup /s /v"/qn REINSTALL=ALL"
Note
Use REINSTALL switch only if the same installer is already installed
on the system. If you are upgrading an earlier version of the installer,
use setup /s /v/qn as described above.