Installation Guide

The EPS-C2 system is compatible with the following switch models:
•
X440-G2-12p-10GE4 switch
•
X440-G2-24t-10GE4 switch
•
X440-G2-24p-10GE4 switch
•
X440-G2-24x-10GE4 switch
•
X440-G2-48t-10GE4 switch
•
X440-G2-24t-10GE4-DC switch
•
X440-G2-48t-10GE4-DC switch
•
X440-G2-12t8fx-GE4 switch
•
X440-G2-24x-GE4 switch
•
X440-G2-24t-GE4 switch
•
X450-G2 series switches (all models)
•
X620-8t-2x switch
•
X620-10x switch
The EPS-C2 system provides redundant power for up to five switches. Redundant power connectors on
the rear panel of the EPS-C2 chassis are specific to the supported switch type; a selection switch
toggles between the connector type. Five 2x7 connectors are used to deliver power to the switches.
The 750 W AC PoE PSU used on the EPS-C2 has two power rails: 12V and PoE. These two power rails
are independent. If the PoE rail overloads, it will shut down all PoE but the 12V rail will continue to
function. If the 12V rail overloads, the 12V shuts down and the PoE rail will continue to function.
One redundant 2x7 power cable is shipped with the EPS-C2 chassis to provide the connection between
the external power system and the redundant power input connector on the back of a switch.
Additional redundant power cables are available from Extreme Networks.
The following table lists the power capability in watts of the EPS-C2 based on the number of installed
PSUs. Check the power requirements of your switches to determine how many PSUs you need to install
into the EPS-C2 chassis.
12V Power (W)
PoE Power (W)
1 PSU 300 380
2 PSUs 600 760
3 PSUs 900 1140
For technical specifications, see EPS-C2 Redundant Power Supply Technical Specifications on page 383.
EPS-C2 connectors
The EPS-C2 delivers power in the following ways.
2x7 connector
The 2x7 connector is compatible with ExtremeSwitching X440-G2 and X620 switches. Using the 2x7
connector, the EPS-C2 provides redundant PoE power at the same level no matter how many PSUs are
installed. That is, if there are one, two, or three PSUs installed into the EPS-C2, the EPS-C2 will provide
redundant PoE power capability at the same 380-watt capacity as the internal power supply of the
Power Supplies for Use with Your Switch
ExtremeSwitching and Summit Switches: Hardware Installation Guide 96