HP 1910 User Manual page 541

On the tab, click to select port GigabitEthernet 1/0/3 from the chassis front panel, select
b.
Enable from the Power State list, and select the box before Power Max and enter 9000.
Click Apply.
c.
Figure 495 Configuring the PoE port supplying power to AP
After the configuration takes effect, the IP telephones and the AP are powered and can work properly.
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