Solved: Due to Insuffiecnt inline pwer. Upgrade inline power source or install power injector. - Cisco Community
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Amazon.com: HQRP PoE Injector Compatible with Cisco WAP121 Wireless Access Point Inline Single-Port Gigabit 802.3af Power Over Ethernet AC Adapter Power Supply Cord WAP121-A-K9-NA IEEE802.3af Replacement : Electronics
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Cisco 2960 Error: %ILPOWER-3-CONTROLLER_PORT_ERR: Controller port error: Power Controller reports power supply VEE under voltage and lockout – IT Wiz Technology Blog
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