System information

Cisco Cat3K ST 6 June 2012

Feature Set Models Total

10/100/1000

Ethernet Ports

Default AC

Power Supply

Available PoE

Power

12S-S

WS-C3750X-

24S-S

24 GE SFP 350W -

IP Services WS-C3750X-

12S-E

12 GE SFP 350W -

WS-C3750X-

24S-E

24 GE SFP

WS-C3750X-

24T-E

WS-C3750X-

48T-E

WS-C3750X-

24P-E

715W 435W

WS-C3750X-

48P-E

WS-C3750X-

48PF-E

48 1100W 800W

StackPower Connector

StackPower can be deployed in either power sharing mode or redundancy mode. In

power sharing mode, the power of all the power supplies in the stack is aggregated and

distributed among the switches in the stack. In redundant mode, when the total power

budget of the stack is calculated, the wattage of the largest power supply is not included.

That power is held in reserve and used to maintain power to switches and attached

devices when one power supply fails, enabling the network to operate without

interruption. Following the failure of one power supply, the StackPower mode becomes

power sharing.

StackPower allows customers to simply add one extra power supply in any switch of the

stack and provide either power redundancy for any of the stack members or simply add

more power to the shared pool. StackPower eliminates the need for an external redundant

power system or installation of dual power supplies in all the stack members.