Allied Telesis AT-2973T (NetExtreme II) - Manual (Page 89)

AT-2973SX and AT-2973T NetExtreme II Family Adapters Installation and User’s Guide
89
Setting Power Management Options
You can set power management options to allow the operating system to
turn off the controller to save power or to allow the controller to wake up
the computer. If the device is busy doing something such as servicing a
call, the operating system does not shut down the device. The operating
system attempts to shut down every possible device only when the
computer attempts to go into hibernation. To have the controller stay on at
all times, do not click the Allow the computer to turn off the device to
save power check box.
Note
Power management options are not available on blade servers.
Figure 16. Power Management Tab