stack, if the stack units have different PoE chip versions. For example, downgrade is not supported if the ICX7450 stack has units with newer and older PoE chipsets.
PoE/PoE+ - Power over Ethernet PoE/PoE+ - Power over Ethernet PoE/PoE+ - Power over Ethernet Feature ICX 7150 ICX 7250 ICX7450 ICX 7550 ICX 7650 ICX 7850 Auto PoE firmware upgrade 08.0.70 08.0.70 08.0.70 08.0.95 08.0.70 No PoE enabled by default 08.0.70 08.0.70 08.0.70 08.0.95 08.0.70 No Power