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Model:WS-C3750X-12S-S Catalyst 3750-X Switch

Product detail:Cisco Catalyst Switch 3750X-12S Layer 3 - 12 GE SFP ports - IP Base - Managed - Stackable

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WS-C3750X-12S-S Overview


Cisco Catalyst 3750-X Series Switch
Stackable 12 GE SFP ports
Four optional uplink network modules with GE or 10GE ports
Dual redundant, modular power supplies and fans
Media Access Control Security (MACsec) hardware-based encryption
Flexible NetFlow and switch-to-switch hardware encryption with the Service Module uplink
USB Type-A and Type-B ports for storage and console respectively and an out-of-band Ethernet management port
StackWise Plus
Cisco StackPowerTM technology: An innovative feature and industry first for sharing power among stack members
Cisco StackWise Plus technology for ease of use and resiliency with 64 Gbps of throughput
Investment protection with backward compatibility with all other models of Cisco Catalyst 3750 Series Switches

                                                                                                     Figure 1

Cisco Catalyst 3750-X Series Switches support 4 optional network modules for uplink ports (Figure 1);
The default switch configuration doesn't include the uplink module; 
When purchasing switch, customers have flexibility to choose any group of network modules described below:

Product Number

Product Description


Four GbE port network module


Two 10GbE SFP+ ports network module with four physical ports with two SFP+ and two regular SFP ports


Two 10GB-T ports network module


Service Module with two 10GbE SFP+ ports network module for Netflow and MACsec encryption

                                                                                              Figure 2

Dual Redundant Modular Power Supplies

Cisco Catalyst 3750-X Series and 3560-X Series Switches support dual redundant power supplies (Figure 2);
One power supply is shipped with the switch by default;
Other power supply/suppliers can be purchased when ordering the switch or next time according to your needs.
If only one power supply is installed, it should always be in the power supply bay 1.

Table below shows the different power supplies available in these switches and available PoE power.

Power Supply Models


Default Power Supply

Available PoE Power

24 Port Data Switch



48 Port Data Switch

24 Port PoE Switch



48 Port PoE Switch

48 Port Full PoE Switch



24 Port UPOE Switch



48 Port UPOE Switch

Cisco Catalyst 3750-X Series Switch WS-C3750X-12S-S is an enterprise-class lines of stackable and standalone switches, respectively. Catalyst 3750-X switches provide high availability, scalability, security, energy efficiency, and ease of operation with innovative features such as Cisco StackPower, IEEE 802.3at Power over Ethernet Plus (PoE+) configurations, optional network modules, redundant power supplies, and Media Access Control Security (MACsec) features. Cisco Catalyst 3750-X Series with StackWise Plus technology provides scalability, ease of management and investment protection for the evolving business needs. The Cisco Catalyst 3750-X switches enhance productivity by enabling applications such as IP telephony, wireless, and video for borderless network experience.

WS-C3750X-12S-S Specifications

WS-C3750X-12S-S Data Sheet
Manufacturer: Cisco
Product ID: WS-C3750X-12S-S
Product Description: Catalyst 3750X 12 Port GE SFP IP Base
Product Type: Layer 3 Switch
Token Ring Port: No
LRE Port: No
Stack Port: Yes
I/O Expansions
Number of Total Expansion Slots: 13
Expansion Slot Type: SFP
Number of SFP Slots: 12
Network & Communication
Layer Supported: 3
Management & Protocols
Manageable: Yes
  • QoS
  • VLAN
  • Embedded Event Manager
  • Command-line interface
  • SNMPv1, v2c, v3
  • DHCP
  • Telnet
  • RMON
  • Syslog
  • CiscoWorks LAN Management Solution
  • Cisco Network Assistant
  • Memory
    Standard Memory: 256 MB
    Memory Technology: DRAM
    Flash Memory: 128 MB
    Power Description
    PoE Port: No
    Input Voltage: 110 V AC
    220 V AC
    Power Source: Power Supply
    Redundant Power Supply: Yes
    Physical Characteristics
    Compatible Rack Unit: 1U
    Form Factor: Rack-mountable


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    Return Material Authorization (RMA) Process

    Standard Hardware Warranty Policy :
    Original new sealed Cisco product: 1 Year
    Used Cisco product: 3 Month
    The Support Contacts :
    If your Cisco products failed, you must contact your sales representative to verify product failure. If the problem still can't correct by remote support methods i.e. email or phone support, the RMA procedure will issue.
    The RMA Confirmation :
    Your sales representative will send you RMA form. (Download RMA form)
    (see attachment. PO No.; Product Serial No.; Description of Failure or Problem)
    You Fill it and send back to sales representative.
    RMA Return Shipment :
    A : After ot RMA form, sales representative will tell you returned instruction by email, including shipping address and special shipping invoice.
    B : Returned products have to be packed properly to avoid damage during delivery.
    C : All accessories and user documentations should be returned.
    D : Once shipped, pls tell sales representative tracking No. immediately.
    Delivery Charges :
    The Customer is responsible for paying shipment charges when returning to us; We will pay for shipment of the repaired items back to the customer
    RMA Turnaround Time :
    The defective products will be sent to Cisco Distributor for repair.
    Within four weeks after receipt of returned item, the repaired or replacement item will be ready for return shipment.
    Then item will be shipped to customer by Express such as DHL or Fedex.

    Customer Reviews

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      (2 customer reviews)

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    Good WS-C3750X-12S-S

    By August 1, 2014

    Good quality, cheap price, i think that this supplier is reliable, and have bought two 3750x switches ago. Successful deal!


    By June 27, 2014

    It supports stackpower, either from an xps (rps on steroids) or by creating a separate power-ring.

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    WS-C3750X-12S-S Notes

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