HP V1910 User Manual page 476

Configure the PoE port supplying power to AP
b.
 Click to select port GigabitEthernet 1/0/11 from the chassis front panel.
Select Enable from the Power State drop-down list.

 Select the check box before Power Max and type 9000.
Click Apply.

After the configuration takes effect, the IP telephones and AP are powered and can work properly.
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