Allied Telesis AT-2911GP Network Adapters - Manual (Page 61)

Chapter 3: Installing the Driver Software
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7. Change the directory to the folder where the dpinst utility and the
driver files reside.
8. Install the driver in the silent mode by entering the following command:
> dpinst /S
Note
Adding the /S switch to the dpinst command suppresses the
display of wizard pages, user dialog boxes, and other user
intervention requests.
The driver is installed silently.
Viewing
Supported
DPInst Options
You can display help information about the dpinst command-line
options.
View all supported dpinst options by executing the following command:
1. Open a command prompt window with administrator privileges.
2. Change the directory to the folder where the dpinst utility and the
driver files reside.
> dpinst /?
The command displays the help text.