Power Budget; Table 4: Twisted Pair Cable Requirements For The 10/100/1000Base-T Ports At 1000Mbps - Allied Telesis AT-x510-28GTX Installation Manual

The cable requirements for ports operating at 1000Mbps are given in
Table 4.

Power Budget

The AT-x510-28GPX and AT-x510-52GPX Switches have a power budget
of 370 watts. The AT-x510L-28GP and AT-x510L-52GP Switches have a
power budget of 185 watts. This is the maximum amount of power the
switches can provide at one time to the powered devices.
The AT-x510-28GPX and AT-x510-52GPX Switches have two power
supplies. Each power supply is responsible for providing 185 watts, or half,
of the power budget. Both power supplies must be connected to AC power
sources for the switch to provide the full 370 watts. The power budget is
reduced to 185 watts if only one power supply is connected to a power
source.
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
documentation for their power requirements and add the requirements
Table 4. Twisted Pair Cable Requirements for the 10/100/1000Base-T
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.
x510 Series Installation Guide for Virtual Chassis Stacks
Ports at 1000Mbps
Non-
PoE
No
Yes
Yes
Yes
1000Mbps
PoE PoE+
No No
Yes No
Yes Yes
Yes Yes
29