The 24-port 10/100/1000-T module has PoE standard (J8702A).
The 20-port 10/100/1000T-PoE + 4 mini-GBIC module (J8705A) can be used in those circumstances where fiber connections are needed as downlinks to other switches at a distance, or as switch-to-switch connections. They can be trunked to provide up to 4 gigabits of connectivity. Port trunks, or LAG, can operate across multiple modules to increase redundancy as well.
The 4-port 10GbE X2 module (J8707A).
The 24-port mini-GBIC module (J8706A) can be used as an aggregator in a distribution environment.
The 4-port 10GbE CX-4 module (J8708A) can be used as a low-cost 10G interconnect between two switches in a closet or data center, or to provide high-speed downlinks to another switch supporting CX4 connections. The CX-4 ports support in-line power for media converters used for longer haul fiber connectivity.
Power supplies:
The switch 8212zl supports two power supplies:
875 W. This power supply (J8712A) provides 600 W chassis power and 273 W PoE power. This supply runs on 110 V @ 15 A or 230 V @ 10 A.
1500 W. This power supply (J8712B) provides 600 W chassis power and 900 W PoE power. This supply runs on 200-240 V @ 10 A.
PoE power from the supplies is additive when configured as auto-failover power. Both power supplies can be in the same chassis simultaneously. Maximum power on any PoE port is 15.4 W, although most PoE clients use about 7-10 W. The switch will direct only the power needed to each port.
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Details Line interface modules: The 24-port 10/100/1000-T module has PoE standard (J8702A). The 20-port 10/100/1000T-PoE + 4 mini-GBIC module (J8705A) can be used in those circumstances where...
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