Allied Telesis AT-IX5-28GPX manual Cable Type, 1000Mbps, Non-PoE, PoE+

IX5-28GPX Installation Guide

The cable requirements for ports operating at 1000Mbps are given in

Table 3.

Table 3. Twisted Pair Cable Requirements for the 10/100/1000Base-T

Ports at 1000Mbps

Cable Type		1000Mbps
	Non-PoE	PoE	PoE+
Cat 3: Standard TIA/EIA 568-B-	No	No	No
compliant Category 3 shielded
or unshielded cabling with 100
ohm impedance and a
frequency of 16 MHz.
Cat 5: Standard TIA/EIA 568-A-	Yes	Yes	No
compliant Category 5 shielded
or unshielded cabling with 100
ohm impedance and a
frequency of 100 MHz.
Cat 5e: Standard TIA/EIA 568-	Yes	Yes	Yes
B-compliant Enhanced
Category 5 (Cat 5e) shielded or
unshielded cabling with 100
ohm impedance and a
frequency of 100 MHz.
Cat 6 or 6a: Standard TIA/EIA	Yes	Yes	Yes
568-B-compliant Category 6 or
6a shielded cabling.

Power Budget The AT-IX5-28GPX switch has a power budget of 720 watts when two power supply modules are installed. This is the maximum amount of power the switch can provide at one time to the powered devices.

Two power supplies must be installed for the switch to provide the full 720 watts. Each power supply is responsible for providing 360 watts, or half, of the power budget. The power budget is reduced to 360 watts if only one power supply is installed.

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.

To determine whether the power requirements of the PoE devices you plan to connect to the switch exceed its power budget, refer to their

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