Chapter 1: Overview
30
Power budget The x230 Series PoE switches have the following power budgets:
AT-x230-10GP: 124 watts
AT-x230-18GP: 247 watts
AT-x230-28GP: 370 watts
This is the maximum amount of power the switches can provide at one
time to the powered devices.
The power requirements of the PoE devices determine the maximum
number of devices the switch can support at one time. So long as the total
power requirements of the powered devices is less than the power budget
of the switch, the switch can supply power to all the devices. But if the total
power requirements exceed the power budget, the switch denies power to
one or more ports using a mechanism referred to as port prioritization.
T
ABLE 4. TWISTED PAIR CABLE REQUIREMENTS FOR THE 10/1000BASE-T
AND 100BASE-TX PORTS AT 1000MBPS
Cable type
1000Mbps
Non-PoE PoE PoE+
Cat 3: Standard TIA/EIA 568-B-
compliant Category 3 shielded
or unshielded cabling with 100
ohm impedance and a
frequency of 16 MHz
No No No
Cat 5: Standard TIA/EIA 568-A-
compliant Category 5 shielded
or unshielded cabling with 100
ohm impedance and a
frequency of 100 MHz
Yes Yes No
Cat 5e: 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
Yes Yes Yes
Cat 6 or 6a: Standard TIA/EIA
568-B-compliant Category 6 or
6a shielded cabling
Yes Yes Yes
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