3com 4210 PWR 9-Port 3CR17341-91-ME User Manual

Power over Ethernet (PoE)-enabled devices use twisted pairs through electrical 
ports to supply power to the remote powered devices (PD) in the network and 
implement power supply and data transmission simultaneously.

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Reliability: The centralized power supply provides backup convenience, unified 
management, and safety.

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Easy connection: Network terminals only require an Ethernet cable, but no 
external power supply.

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Standard: PoE conforms to the 802.3af standard and uses a globally uniform 
power interfaces;

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Bright application prospect: PoE can be applied to IP phones, wireless access 
points (APs), chargers for portable devices, card readers, network cameras, and 
data collection system.

PoE consists of three components: power sourcing equipment (PSE), PD, and 
power interface (PI).

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PSE: PSE is comprised of the power and the PSE functional module. It can 
implement PD detection, PD power information collection, PoE, power supply 
monitoring, and power-off for devices.

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PD: PDs receive power from the PSE. PDs include standard PDs and 
nonstandard PDs. Standard PDs conform to the 802.3af standard, including IP 
phones, Wireless APs, network cameras and so on.

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PI: PIs are RJ45 interfaces which connect PSE/PDs to network cables.

PoE-enabled Switch 4210s:

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Switch 4210 PWR 9-Port

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Switch 4210 PWR 18-Port

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Switch 4210 PWR 26-Port