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Chapter 1: Overview
Powered Device
Classes for PoE
and PoE+
26
Table 3. PoE Twisted-Pair Cable Requirements for Powered Devices
Cable Type
Standard TIA/EIA 568-
B-compliant Category 3
shielded or unshielded
cabling with 100 ohm
impedance and a
frequency of 16 MHz.
Standard TIA/EIA 568-
A-compliant Category 5
shielded or unshielded
cabling with 100 ohm
impedance and a
frequency of 100 MHz.
Standard TIA/EIA 568-
B-compliant Enhanced
Category 5 (Cat 5e)
shielded or unshielded
cabling with 100 ohm
impedance and a
frequency of 100 MHz.
Standard TIA/EIA 568-
B-compliant Category 6
or 6a shielded cabling.
The PoE and PoE+ standards define five powered device classes. The
classes are defined by the power requirements of the powered devices.
The classes are shown in Table 4. The IS230-10GP switch supports all
five classes.
Table 4. PoE and PoE+ Powered Device Classes
Class
Usage
0
Default
1
Optional
2
Optional
3
Optional
4
Optional
10Mbps
100Mbps
PoE
PoE+
PoE
No
No
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Maximum Power Output
at the Switch Port
15.4W
4.0W
7.0W
15.4W
30.0W
1000Mbps
PoE+
PoE
PoE+
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
PD Power Range
.044W to 12.95W
0.44W to 3.84W
3.84W to 6.49W
6.49W to 12.95W
12.95W to 25.5W
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