Hi,
From the logs that you have attached,
Power Status
------------
Item Value
---- -----
Power Supply : POE-AF
LLDP Power : Successfully negotiated at 17.0W
Current Operational State : USB port enabled;
From 300 series datasheet:
http://www.arubanetworks.com/assets/ds/DS_AP300Series.pdf
- Unrestricted functionality with 802.3at PoE
- When using IPM, the AP may enter power-save mode with reduced functionality when powered by an 802.3af PoE source (see details on Intelligent Power Monitoring elsewhere in this datasheet) -
-Without IPM, the USB port is disabled when the AP is powered by an 802.3af PoE source •
-Maximum (worst-case) power consumption: 13W (PoE) or 11W (DC) - -Excludes power consumed by external USB device (and internal overhead); this could add up to 6.5W (PoE) or 5.5W (DC) for a 5W/1A USB device •